docs for CoffeeScript 0.5.2, which is now out.

This reverts commit 9503ea3040.

.gitignore

@@ -1 +1,6 @@
-parser.output
+presentation
+test.coffee
+parser.output
+test/fixtures/underscore
+examples/beautiful_code/parse.coffee
+*.gem

Cakefile

@@ -0,0 +1,65 @@
+fs: require 'fs'
+coffee: require 'coffee-script'
+
+# Run a CoffeeScript through our node/coffee interpreter.
+run: (args) ->
+  proc: process.createChildProcess 'bin/coffee', args
+  proc.addListener 'error', (err) -> if err then puts err
+
+
+task 'install', 'install CoffeeScript into /usr/local', ->
+  exec([
+    'mkdir -p /usr/local/lib/coffee-script'
+    'cp -rf bin lib LICENSE README package.json src vendor /usr/local/lib/coffee-script'
+    'ln -sf /usr/local/lib/coffee-script/lib/bin/coffee /usr/local/bin/coffee'
+    'ln -sf /usr/local/lib/coffee-script/lib/bin/cake /usr/local/bin/cake'
+  ].join(' && '))
+
+
+task 'build', 'build the CoffeeScript language from source', ->
+  fs.readdir 'src', (err, files) ->
+    files: 'src/' + file for file in files when file.match(/\.coffee$/)
+    run ['-o', 'lib'].concat(files)
+
+
+task 'build:parser', 'rebuild the Jison parser (run build first)', ->
+  parser: require('grammar').parser
+  js: parser.generate()
+  parser_path: 'lib/parser.js'
+  fs.writeFile parser_path, js
+
+
+task 'build:ultraviolet', 'build and install the Ultraviolet syntax highlighter', ->
+  exec 'plist2syntax extras/CoffeeScript.tmbundle/Syntaxes/CoffeeScript.tmLanguage', (err) ->
+    exec 'sudo mv coffeescript.yaml /usr/local/lib/ruby/gems/1.8/gems/ultraviolet-0.10.2/syntax/coffeescript.syntax'
+
+
+task 'build:underscore', 'rebuild the Underscore.coffee documentation page', ->
+  exec 'uv -s coffeescript -t idle -h examples/underscore.coffee > documentation/underscore.html'
+
+
+task 'build:browser', 'rebuild the merged script for inclusion in the browser', ->
+  exec 'rake browser'
+
+
+task 'doc', 'watch and continually rebuild the documentation', ->
+  exec 'rake doc'
+
+
+task 'test', 'run the CoffeeScript language test suite', ->
+  process.mixin require 'assert'
+  test_count: 0
+  start_time: new Date()
+  [original_ok, original_throws]: [ok, throws]
+  process.mixin {
+    ok:     (args...) -> test_count += 1; original_ok(args...)
+    throws: (args...) -> test_count += 1; original_throws(args...)
+  }
+  process.addListener 'exit', ->
+    time: ((new Date() - start_time) / 1000).toFixed(2)
+    puts '\033[0;32mpassed ' + test_count + ' tests in ' + time + ' seconds\033[0m'
+  fs.readdir 'test', (err, files) ->
+    for file in files
+      fs.readFile 'test/' + file, (err, source) ->
+        js: coffee.compile source
+        process.compile js, file

LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2010 Jeremy Ashkenas
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

README

@@ -0,0 +1,41 @@
+=                              
+            {                   
+         }   }   {              
+        {   {  }  }             
+         }   }{  {               
+        {  }{  }  }                    _____       __  __           
+       ( }{ }{  { )                   / ____|     / _|/ _|          
+     .- { { }  { }} -.               | |     ___ | |_| |_ ___  ___ 
+    (  ( } { } { } }  )              | |    / _ \|  _|  _/ _ \/ _ \ 
+    |`-..________ ..-'|              | |___| (_) | | | ||  __/  __/ 
+    |                 |               \_____\___/|_| |_| \___|\___|
+    |                 ;--.           
+    |                (__  \            _____           _       _   
+    |                 | )  )          / ____|         (_)     | |  
+    |                 |/  /          | (___   ___ _ __ _ _ __ | |_ 
+    |                 (  /            \___ \ / __| '__| | '_ \| __|
+    |                 |/              ____) | (__| |  | | |_) | |_ 
+    |                 |              |_____/ \___|_|  |_| .__/ \__|
+     `-.._________..-'                                  | |        
+                                                        |_|
+                  
+                                                        
+  CoffeeScript is a little language that compiles into JavaScript.
+  
+  Install Node.js, and then the CoffeeScript compiler:
+  sudo bin/cake install
+  
+  Compile a script:
+  coffee /path/to/script.coffee
+  
+  For documentation, usage, and examples, see:
+  http://coffeescript.org/
+  
+  To suggest a feature, report a bug, or general discussion:
+  http://github.com/jashkenas/coffee-script/issues/
+  
+  If you'd like to chat, drop by #coffeescript on Freenode.
+
+  The source repository:
+  git://github.com/jashkenas/coffee-script.git
+

Rakefile

@@ -0,0 +1,31 @@
+require 'erb'
+require 'fileutils'
+require 'rake/testtask'
+require 'rubygems'
+require 'yui/compressor'
+
+desc "Build the documentation page"
+task :doc do
+  source = 'documentation/index.html.erb'
+  child = fork { exec "bin/coffee documentation/coffee/*.coffee -o documentation/js -w" }
+  at_exit { Process.kill("INT", child) }
+  Signal.trap("INT") { exit }
+  loop do
+    mtime = File.stat(source).mtime
+    if !@mtime || mtime > @mtime
+      rendered = ERB.new(File.read(source)).result(binding)
+      File.open('index.html', 'w+') {|f| f.write(rendered) }
+    end
+    @mtime = mtime
+    sleep 1
+  end
+end
+
+desc "Build the single concatenated and minified script for the browser"
+task :browser do
+  sources = %w(rewriter.js lexer.js parser.js scope.js nodes.js coffee-script.js)
+  code    = sources.map {|s| File.read('lib/' + s) }.join('')
+  code    = YUI::JavaScriptCompressor.new.compress(code)
+  File.open('extras/coffee-script.js', 'w+') {|f| f.write(code) }
+end
+

SYNTAX

@@ -1,30 +0,0 @@
-Every line is an expression. Multiple expressions on a single line can be
-separated by a ";" character.
-
-NUM:      1
-          1.0
-          
-STRING:   "hello"
-          'hello'
-          
-OBJECT:   {one : 1, two : 2}
-          
-ARRAY:    [1, 2, 3]
-          
-CODE:     a, b => a * b.
-          
-IF:       return x if x > 1
-            
-          if (x > 1) return x
-              
-ASSIGN:   a : b
-              
-LOGICAL:  x && y
-          x and y
-          x || y
-          x or y
-
-
-
-          
-

WISHLIST

@@ -1,6 +0,0 @@
-* Is it possible to close blocks (functions, ifs, trys) without an explicit
-  block delimiter or significant whitespace?
-  
-* Is it possible to pass comments through cleanly and have them show up on
-  the other end? This includes comments in the middle of array and object
-  literals, and argument lists.

bin/cake

@@ -0,0 +1,7 @@
+#!/usr/bin/env node
+
+process.mixin(require('sys'));
+
+require.paths.unshift(__dirname + '/../lib');
+
+require('cake').run();

bin/coffee

@@ -0,0 +1,7 @@
+#!/usr/bin/env node
+
+process.mixin(require('sys'));
+
+require.paths.unshift(__dirname + '/../lib');
+
+require('command_line').run();

code.cs

@@ -1,126 +0,0 @@
-# TODO: Add range indexing: array[5..7] => array.slice(5, 7)
-
-# Functions:
-square: x => x * x.
-
-sum: x, y => x + y.
-
-odd: x => x % 2 is 0.
-
-even: x => x % 2 aint 0.
-
-run_loop: =>
-  fire_events( e => e.stopPropagation(). )
-  listen()
-  wait().
-
-# Objects:
-dense_object_literal: {one: 1, two: 2, three: 3}
-
-spaced_out_multiline_object: {
-
-  pi: 3.14159
-
-  list: [1, 2, 3, 4]
-
-  three: new Idea()
-
-  inner_obj: {
-    freedom: => _.freedom().
-  }
-
-}
-
-# Arrays:
-stooges : [{moe: 45}, {curly: 43}, {larry: 46}]
-
-exponents : [x => x., x => x * x., x => x * x * x.]
-
-empty: []
-
-# Conditionals and ternaries.
-if submarine.shields_up
-  full_speed_ahead()
-  fire_torpedos()
-else
-  run_away().
-
-eldest: if 25 > 21 then liz else marge.
-
-decoration: medal_of_honor if war_hero
-
-go_to_sleep() unless coffee
-
-# Returning early:
-race: =>
-  run()
-  walk()
-  crawl()
-  if tired then return sleep().
-  race().
-
-# Conditional operators:
-good ||= evil
-wine &&= cheese
-
-# Nested property access and calls.
-((moon.turn(360))).shapes[3].move({x: 45, y: 30}).position
-
-a: b: c: 5
-
-# Embedded JavaScript.
-callback(
-  `function(e) { e.stop(); }`
-)
-
-# Try/Catch/Finally/Throw.
-try
-  all_hell_breaks_loose()
-  dogs_and_cats_living_together()
-  throw "up"
-catch error
-  print( error )
-finally
-  clean_up().
-
-try all_hell_breaks_loose() catch error print(error) finally clean_up().
-
-# While loops.
-while demand > supply
-  sell()
-  restock().
-
-while supply > demand then buy().
-
-# Unary operators.
-!!true
-
-# Lexical scoping.
-a: 5
-change_a_and_set_b: =>
-  a: 10
-  b: 15.
-b: 20
-
-# Array comprehensions.
-supper: food.capitalize() for food in ['toast', 'cheese', 'wine'].
-
-drink(bottle) for bottle, i in ['soda', 'wine', 'lemonade'] if even(i).
-
-# Switch statements.
-switch day
-case "Tuesday"   then eat_breakfast()
-case "Sunday"    then go_to_church()
-case "Saturday"  then go_to_the_park()
-case "Wednesday"
-  eat_breakfast()
-  go_to_work()
-  eat_dinner()
-default go_to_work().
-
-# Semicolons can optionally be used instead of newlines.
-wednesday: => eat_breakfast(); go_to_work(); eat_dinner(); .
-
-# Array slice literals.
-zero_to_nine: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
-three_to_six: zero_to_nine[3, 6]

documentation/coffee/aliases.coffee

@@ -0,0 +1,9 @@
+launch() if ignition is on
+
+volume: 10 if band isnt spinal_tap
+
+let_the_wild_rumpus_begin() unless answer is no
+
+if car.speed < speed_limit then accelerate()
+
+print "My name is " + @name

documentation/coffee/arguments.coffee

@@ -0,0 +1,4 @@
+backwards: ->
+  alert arguments.reverse()
+
+backwards "stairway", "to", "heaven"

documentation/coffee/array_comprehensions.coffee

@@ -0,0 +1,7 @@
+# Eat lunch.
+lunch: eat(food) for food in ['toast', 'cheese', 'wine']
+
+# Naive collision detection.
+for roid in asteroids
+  for roid2 in asteroids when roid isnt roid2
+    roid.explode() if roid.overlaps roid2

documentation/coffee/assignment.coffee

@@ -0,0 +1,2 @@
+greeting: "Hello CoffeeScript"
+difficulty: 0.5

documentation/coffee/cake_tasks.coffee

@@ -0,0 +1,5 @@
+process.mixin require 'assert'
+
+task 'test', 'run each of the unit tests', ->
+  for test in test_files
+    fs.readFile test, (err, code) -> eval coffee.compile code

documentation/coffee/comparisons.coffee

@@ -0,0 +1,5 @@
+cholesterol: 127
+
+healthy: 200 > cholesterol > 60
+
+

documentation/coffee/conditionals.coffee

@@ -0,0 +1,9 @@
+mood: greatly_improved if singing
+
+if happy and knows_it
+  claps_hands()
+  cha_cha_cha()
+
+date: if friday then sue else jill
+
+expensive ||= do_the_math()

documentation/coffee/embedded.coffee

@@ -0,0 +1,5 @@
+hi: `function() {
+  return [document.title, "Hello JavaScript"].join(": ");
+}`
+
+

documentation/coffee/existence.coffee

@@ -0,0 +1,8 @@
+solipsism: true if mind? and not world?
+
+speed ?= 140
+
+
+
+
+

documentation/coffee/expressions.coffee

@@ -0,0 +1,9 @@
+grade: (student) ->
+  if student.excellent_work
+    "A+"
+  else if student.okay_stuff
+    if student.tried_hard then "B" else "B-"
+  else
+    "C"
+
+eldest: if 24 > 21 then "Liz" else "Ike"

documentation/coffee/expressions_assignment.coffee

@@ -0,0 +1 @@
+six: (one: 1) + (two: 2) + (three: 3)

documentation/coffee/expressions_comprehension.coffee

@@ -0,0 +1,3 @@
+# The first ten global properties.
+
+globals: (name for name of window)[0...10]

documentation/coffee/expressions_try.coffee

@@ -0,0 +1,6 @@
+alert(
+  try
+    nonexistent / undefined
+  catch error
+    "And the error is ... " + error
+)

documentation/coffee/fat_arrow.coffee

@@ -0,0 +1,6 @@
+Account: (customer, cart) ->
+  @customer: customer
+  @cart: cart
+
+  $('.shopping_cart').bind 'click', (event) =>
+    @customer.purchase @cart

documentation/coffee/functions.coffee

@@ -0,0 +1,2 @@
+square: (x) -> x * x
+cube:   (x) -> square(x) * x

documentation/coffee/heredocs.coffee

@@ -0,0 +1,5 @@
+html: '''
+      <strong>
+        cup of coffeescript
+      </strong>
+      '''

documentation/coffee/multiple_return_values.coffee

@@ -0,0 +1,5 @@
+weather_report: (location) ->
+  # Make an Ajax request to fetch the weather...
+  [location, 72, "Mostly Sunny"]
+
+[city, temp, forecast]: weather_report "Berkeley, CA"

documentation/coffee/object_comprehensions.coffee

@@ -0,0 +1,4 @@
+years_old: {max: 10, ida: 9, tim: 11}
+
+ages: for child, age of years_old
+  child + " is " + age

documentation/coffee/object_extraction.coffee

@@ -0,0 +1,13 @@
+futurists: {
+  sculptor: "Umberto Boccioni"
+  painter:  "Vladimir Burliuk"
+  poet: {
+    name:   "F.T. Marinetti"
+    address: [
+      "Via Roma 42R"
+      "Bellagio, Italy 22021"
+    ]
+  }
+}
+
+{poet: {name: poet, address: [street, city]}}: futurists

documentation/coffee/objects_and_arrays.coffee

@@ -0,0 +1,13 @@
+song: ["do", "re", "mi", "fa", "so"]
+
+ages: {
+  max: 10
+  ida: 9
+  tim: 11
+}
+
+matrix: [
+  1, 0, 1
+  0, 0, 1
+  1, 1, 0
+]

documentation/coffee/overview.coffee

@@ -0,0 +1,29 @@
+# Assignment:
+number: 42
+opposite_day: true
+
+# Conditions:
+number: -42 if opposite_day
+
+# Functions:
+square: (x) -> x * x
+
+# Arrays:
+list: [1, 2, 3, 4, 5]
+
+# Objects:
+math: {
+  root:   Math.sqrt
+  square: square
+  cube:   (x) -> x * square x
+}
+
+# Splats:
+race: (winner, runners...) ->
+  print winner, runners
+
+# Existence:
+alert "I knew it!" if elvis?
+
+# Array comprehensions:
+cubed_list: math.cube num for num in list

documentation/coffee/parallel_assignment.coffee

@@ -0,0 +1,4 @@
+bait: 1000
+and_switch: 0
+
+[bait, and_switch]: [and_switch, bait]

documentation/coffee/range_comprehensions.coffee

@@ -0,0 +1,6 @@
+countdown: num for num in [10..1]
+
+egg_delivery: ->
+  for i in [0...eggs.length] by 12
+    dozen_eggs: eggs[i...i+12]
+    deliver new egg_carton(dozen)

documentation/coffee/scope.coffee

@@ -0,0 +1,5 @@
+num: 1
+change_numbers: ->
+  new_num: -1
+  num: 10
+new_num: change_numbers()

documentation/coffee/slices.coffee

@@ -0,0 +1,6 @@
+numbers: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+
+three_to_six: numbers[3..6]
+
+numbers_copy: numbers[0...numbers.length]
+

documentation/coffee/soaks.coffee

@@ -0,0 +1 @@
+lottery.draw_winner()?.address?.zipcode

documentation/coffee/splats.coffee

@@ -0,0 +1,25 @@
+gold: silver: the_field: "unknown"
+
+award_medals: (first, second, rest...) ->
+  gold:       first
+  silver:     second
+  the_field:  rest
+
+contenders: [
+  "Michael Phelps"
+  "Liu Xiang"
+  "Yao Ming"
+  "Allyson Felix"
+  "Shawn Johnson"
+  "Roman Sebrle"
+  "Guo Jingjing"
+  "Tyson Gay"
+  "Asafa Powell"
+  "Usain Bolt"
+]
+
+award_medals contenders...
+
+alert "Gold: " + gold
+alert "Silver: " + silver
+alert "The Field: " + the_field

documentation/coffee/splices.coffee

@@ -0,0 +1,5 @@
+numbers: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+
+numbers[3..6]: [-3, -4, -5, -6]
+
+

documentation/coffee/strings.coffee

@@ -0,0 +1,8 @@
+moby_dick: "Call me Ishmael. Some years ago --
+never mind how long precisely -- having little
+or no money in my purse, and nothing particular
+to interest me on shore, I thought I would sail
+about a little and see the watery part of the
+world..."
+
+

documentation/coffee/super.coffee

@@ -0,0 +1,34 @@
+Animal: ->
+
+Animal::move: (meters) ->
+  alert @name + " moved " + meters + "m."
+
+Snake: (name) ->
+  @name: name
+  this
+
+Snake extends Animal
+
+Snake::move: ->
+  alert "Slithering..."
+  super 5
+
+Horse: (name) ->
+  @name: name
+  this
+
+Horse extends Animal
+
+Horse::move: ->
+  alert "Galloping..."
+  super 45
+
+sam: new Snake "Sammy the Python"
+tom: new Horse "Tommy the Palomino"
+
+sam.move()
+tom.move()
+
+
+
+

documentation/coffee/switch.coffee

@@ -0,0 +1,10 @@
+switch day
+  when "Mon" then go_to_work()
+  when "Tue" then go_to_the_park()
+  when "Thu" then go_ice_fishing()
+  when "Fri", "Sat"
+    if day is bingo_day
+      go_to_bingo()
+      go_dancing()
+  when "Sun" then go_to_church()
+  else go_to_work()

documentation/coffee/try.coffee

@@ -0,0 +1,7 @@
+try
+  all_hell_breaks_loose()
+  cats_and_dogs_living_together()
+catch error
+  print error
+finally
+  clean_up()

documentation/coffee/while.coffee

@@ -0,0 +1,10 @@
+# Econ 101
+if this.studying_economics
+  while supply > demand then buy()
+  while supply < demand then sell()
+
+# Nursery Rhyme
+num: 6
+lyrics: while num -= 1
+  num + " little monkeys, jumping on the bed.
+    One fell out and bumped his head."

documentation/css/docs.css

@@ -0,0 +1,213 @@
+body {
+  font-size: 14px;
+  line-height: 20px;
+  color: #191933;
+  font-family: Arial, Helvetica, sans-serif;
+}
+div.container {
+  width: 950px;
+  margin: 100px 0 50px 50px;
+}
+p {
+  width: 625px;
+}
+a {
+  color: #000055;
+}
+h1, h2, h3, h4, h5, h6 {
+  margin-top: 40px;
+}
+br.clear {
+  height: 0;
+  clear: both;
+}
+ul {
+  padding-left: 20px;
+}
+b.header {
+  color: #000055;
+  display: block;
+  margin: 40px 0 5px 0;
+  font-size: 16px;
+}
+li {
+  margin-bottom: 10px;
+}
+table {
+  margin: 16px 0 0 13px; padding: 0;
+  width: 625px;
+}
+  tr, td {
+    margin: 0; padding: 0;
+  }
+    td {
+      padding: 9px 15px 9px 0;
+    }
+code, pre, tt, textarea {
+  font-family: Monaco, Consolas, "Lucida Console", monospace;
+  font-size: 12px;
+  line-height: 18px;
+  color: #191955;
+  white-space: pre-wrap;
+  word-wrap: break-word;
+}
+  tt {
+    background: #f8f8ff;
+    border: 1px solid #dedede;
+    font-size: 85%;
+    padding: 0px 0.2em;
+  }
+  pre {
+    border-left: 6px solid #222255;
+    margin-left: 13px;
+    padding: 3px 0 3px 12px;
+    font-size: 12px;
+  }
+    pre.no_bar {
+      border-left: 0;
+      margin-left: 0;
+      padding-left: 0;
+    }
+div.code {
+  position: relative;
+  border: 1px solid #cacaca;
+  background: #fafaff;
+  padding: 7px 0 10px 0;
+  -moz-border-radius: 5px; -webkit-border-radius: 5px; border-radius: 5px;
+  -webkit-box-shadow: 0px 0px 7px #cacaca;
+}
+  div.code button {
+    position: absolute;
+    right: 8px; bottom: 8px;
+  }
+  div.code pre, div.code textarea {
+    float: left;
+    width: 450px;
+    background: #fafaff;
+    border-left: 1px dotted #559;
+    padding: 0 0 0 12px;
+    margin: 0;
+  }
+    div.code pre:first-child {
+      border-left: 0;
+    }
+
+#fadeout {
+  z-index: 50;
+  position: fixed;
+  left: 0; top: 0; right: 0;
+  height: 100px;
+  background: -webkit-gradient(linear, left top, left bottom, from(rgba(255, 255, 255, 255)), to(rgba(255, 255, 255, 0)));
+  background: -moz-linear-gradient(top, rgba(255, 255, 255, 255), rgba(255, 255, 255, 0));
+}
+
+#flybar {
+  position: fixed;
+  z-index: 100;
+  height: 50px;
+  left: 40px; right: 40px; top: 25px;
+  background: #ddd;
+  padding-left: 235px;
+  background: -webkit-gradient(linear, left top, left bottom, from(#f5f5f5), to(#d0d0d0));
+  background: -moz-linear-gradient(top, #f5f5f5, #d0d0d0);
+  filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr='#F5F5F5', EndColorStr='#D0D0D0');
+  -webkit-border-radius: 20px; -moz-border-radius: 20px; border-radius: 20px;
+  -webkit-box-shadow: 0 0 25px #777; -moz-box-shadow: 0 0 25px #777;
+}
+  #logo {
+    display: block;
+    width: 215px; height: 50px;
+    background: url('logo.png');
+    position: absolute;
+    top: 0px; left: 10px;
+  }
+  .navigation {
+    height: 50px;
+    font: bold 11px/50px Arial;
+    text-transform: uppercase;
+    position: relative;
+    float: left;
+    padding: 0 20px;
+    border: 1px solid #bbb;
+    border-top: 0; border-bottom: 0;
+    cursor: pointer;
+  }
+    .navigation.try {
+      border-left: 0;
+    }
+    .navigation:hover,
+    .navigation.active {
+      background: #d0d0d0;
+      background: -webkit-gradient(linear, left top, left bottom, from(#f0f0f0), to(#c0c0c0));
+      background: -moz-linear-gradient(top, #f0f0f0, #c0c0c0);
+      filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr='#F0F0F0', EndColorStr='#C0C0C0');
+    }
+    .navigation .contents {
+      display: none;
+      position: absolute;
+      background: #fff;
+      top: 50px; left: 0;
+      padding: 5px 0;
+      -webkit-border-radius: 5px; -moz-border-radius: 5px; border-radius: 5px;
+      -webkit-border-top-left-radius: 0; -moz-border-radius-topleft: 0;
+      -webkit-border-top-right-radius: 0; -moz-border-radius-topright: 0;
+      -webkit-box-shadow: 0 0 25px #777; -moz-box-shadow: 0 0 25px #777;
+    }
+      .navigation.active .contents {
+        display: block;
+      }
+        .navigation .contents.repl_wrapper {
+          left: -162px;
+          width: 700px;
+          padding: 0;
+        }
+          .navigation .contents.repl_wrapper .code {
+            -webkit-box-shadow: none; -moz-box-shadow: none;
+            background: transparent;
+            border: 0;
+          }
+          .navigation .code button {
+            bottom: 10px;
+          }
+          .navigation .compile {
+            left: 240px; right: auto;
+          }
+      .navigation .contents a {
+        display: block;
+        width: 300px;
+        text-transform: none;
+        text-decoration: none;
+        font-weight: normal;
+        height: 12px;
+        line-height: 12px;
+        padding: 4px 10px;
+      }
+        .navigation .contents a:hover {
+          background: #f0f0f0;
+        }
+
+.bookmark {
+  display: block;
+  width: 0; height: 0;
+  position: relative;
+  top: -90px;
+}
+
+#repl_source, #repl_results {
+  background: transparent;
+}
+  #repl_source {
+    border: 0;
+    padding: 5px 7px;
+    margin-left: 5px;
+    min-height: 250px;
+    resize: none;
+    width: 295px;
+  }
+  #repl_results {
+    font-family: Monaco, Consolas, "Lucida Console", monospace;
+    text-transform: none;
+    font-weight: normal;
+    min-height: 260px;
+    width: 355px;
+  }

documentation/css/idle.css

@@ -0,0 +1,63 @@
+pre.idle .InheritedClass {
+}
+pre.idle .TypeName {
+   color: #21439C;
+}
+pre.idle .Number {
+}
+pre.idle .LibraryVariable {
+   color: #A535AE;
+}
+pre.idle .Storage {
+   color: #FF5600;
+}
+pre.idle .line-numbers {
+   background-color: #BAD6FD;
+   color: #000000;
+}
+pre.idle {
+   background-color: #FFFFFF;
+   color: #000000;
+}
+pre.idle .StringInterpolation {
+   color: #990000;
+}
+pre.idle .TagName {
+}
+pre.idle .LibraryConstant {
+   color: #A535AE;
+}
+pre.idle .FunctionArgument {
+   color: #0076ad;
+}
+pre.idle .BuiltInConstant {
+   color: #A535AE;
+}
+pre.idle .Invalid {
+   background-color: #990000;
+   color: #FFFFFF;
+}
+pre.idle .LibraryClassType {
+   color: #A535AE;
+}
+pre.idle .LibraryFunction {
+   color: #A535AE;
+}
+pre.idle .TagAttribute {
+}
+pre.idle .Keyword {
+   color: #FF5600;
+}
+pre.idle .UserDefinedConstant {
+}
+pre.idle .String {
+   color: #00A33F;
+}
+pre.idle .FunctionName {
+   color: #21439C;
+}
+pre.idle .Variable {
+}
+pre.idle .Comment {
+   color: #919191;
+}

documentation/js/aliases.js

@@ -0,0 +1,14 @@
+(function(){
+  var volume;
+  if (ignition === true) {
+    launch();
+  }
+  if (band !== spinal_tap) {
+    volume = 10;
+  }
+  if (!(answer === false)) {
+    let_the_wild_rumpus_begin();
+  }
+  car.speed < speed_limit ? accelerate() : null;
+  print("My name is " + this.name);
+})();

documentation/js/arguments.js

@@ -0,0 +1,8 @@
+(function(){
+  var backwards;
+  backwards = function backwards() {
+    arguments = Array.prototype.slice.call(arguments, 0);
+    return alert(arguments.reverse());
+  };
+  backwards("stairway", "to", "heaven");
+})();

documentation/js/array_comprehensions.js

@@ -0,0 +1,26 @@
+(function(){
+  var _a, _b, _c, _d, _e, _f, _g, food, lunch, roid, roid2;
+  // Eat lunch.
+  lunch = (function() {
+    _a = []; _b = ['toast', 'cheese', 'wine'];
+    for (_c = 0; _c < _b.length; _c++) {
+      food = _b[_c];
+      _a.push(eat(food));
+    }
+    return _a;
+  }).call(this);
+  // Naive collision detection.
+  _d = asteroids;
+  for (_e = 0; _e < _d.length; _e++) {
+    roid = _d[_e];
+    _f = asteroids;
+    for (_g = 0; _g < _f.length; _g++) {
+      roid2 = _f[_g];
+      if (roid !== roid2) {
+        if (roid.overlaps(roid2)) {
+          roid.explode();
+        }
+      }
+    }
+  }
+})();

documentation/js/assignment.js

@@ -0,0 +1,5 @@
+(function(){
+  var difficulty, greeting;
+  greeting = "Hello CoffeeScript";
+  difficulty = 0.5;
+})();

documentation/js/cake_tasks.js

@@ -0,0 +1,14 @@
+(function(){
+  process.mixin(require('assert'));
+  task('test', 'run each of the unit tests', function() {
+    var _a, _b, _c, test;
+    _a = []; _b = test_files;
+    for (_c = 0; _c < _b.length; _c++) {
+      test = _b[_c];
+      _a.push(fs.readFile(test, function(err, code) {
+        return eval(coffee.compile(code));
+      }));
+    }
+    return _a;
+  });
+})();

documentation/js/comparisons.js

@@ -0,0 +1,5 @@
+(function(){
+  var cholesterol, healthy;
+  cholesterol = 127;
+  healthy = (200 > cholesterol) && (cholesterol > 60);
+})();

documentation/js/conditionals.js

@@ -0,0 +1,12 @@
+(function(){
+  var date, expensive, mood;
+  if (singing) {
+    mood = greatly_improved;
+  }
+  if (happy && knows_it) {
+    claps_hands();
+    cha_cha_cha();
+  }
+  date = friday ? sue : jill;
+  expensive = expensive || do_the_math();
+})();

documentation/js/embedded.js

@@ -0,0 +1,6 @@
+(function(){
+  var hi;
+  hi = function() {
+  return [document.title, "Hello JavaScript"].join(": ");
+};
+})();

documentation/js/existence.js

@@ -0,0 +1,7 @@
+(function(){
+  var solipsism, speed;
+  if ((typeof mind !== "undefined" && mind !== null) && !(typeof world !== "undefined" && world !== null)) {
+    solipsism = true;
+  }
+  speed = (typeof speed !== "undefined" && speed !== null) ? speed : 140;
+})();

documentation/js/expressions.js

@@ -0,0 +1,13 @@
+(function(){
+  var eldest, grade;
+  grade = function grade(student) {
+    if (student.excellent_work) {
+      return "A+";
+    } else if (student.okay_stuff) {
+      return student.tried_hard ? "B" : "B-";
+    } else {
+      return "C";
+    }
+  };
+  eldest = 24 > 21 ? "Liz" : "Ike";
+})();

documentation/js/expressions_assignment.js

@@ -0,0 +1,4 @@
+(function(){
+  var one, six, three, two;
+  six = ((one = 1)) + ((two = 2)) + ((three = 3));
+})();

documentation/js/expressions_comprehension.js

@@ -0,0 +1,12 @@
+(function(){
+  var _a, _b, globals, name;
+  var __hasProp = Object.prototype.hasOwnProperty;
+  // The first ten global properties.
+  globals = (function() {
+    _a = []; _b = window;
+    for (name in _b) { if (__hasProp.call(_b, name)) {
+      _a.push(name);
+    }}
+    return _a;
+  }).call(this).slice(0, 10);
+})();

documentation/js/expressions_try.js

@@ -0,0 +1,9 @@
+(function(){
+  alert((function() {
+    try {
+      return nonexistent / undefined;
+    } catch (error) {
+      return "And the error is ... " + error;
+    }
+  }).call(this));
+})();

documentation/js/fat_arrow.js

@@ -0,0 +1,15 @@
+(function(){
+  var Account;
+  Account = function Account(customer, cart) {
+    this.customer = customer;
+    this.cart = cart;
+    return $('.shopping_cart').bind('click', (function(__this) {
+      var __func = function(event) {
+        return this.customer.purchase(this.cart);
+      };
+      return (function() {
+        return __func.apply(__this, arguments);
+      });
+    })(this));
+  };
+})();

documentation/js/functions.js

@@ -0,0 +1,9 @@
+(function(){
+  var cube, square;
+  square = function square(x) {
+    return x * x;
+  };
+  cube = function cube(x) {
+    return square(x) * x;
+  };
+})();

documentation/js/heredocs.js

@@ -0,0 +1,4 @@
+(function(){
+  var html;
+  html = "<strong>\n  cup of coffeescript\n</strong>";
+})();

documentation/js/intro.js

@@ -0,0 +1,7 @@
+(function(){
+
+  // CoffeeScript on the left, JS on the right.
+  var square = function(x) {
+    return x * x;
+  };
+})();

documentation/js/multiple_return_values.js

@@ -0,0 +1,11 @@
+(function(){
+  var _a, city, forecast, temp, weather_report;
+  weather_report = function weather_report(location) {
+    // Make an Ajax request to fetch the weather...
+    return [location, 72, "Mostly Sunny"];
+  };
+  _a = weather_report("Berkeley, CA");
+  city = _a[0];
+  temp = _a[1];
+  forecast = _a[2];
+})();

documentation/js/object_comprehensions.js

@@ -0,0 +1,17 @@
+(function(){
+  var _a, _b, age, ages, child, years_old;
+  var __hasProp = Object.prototype.hasOwnProperty;
+  years_old = {
+    max: 10,
+    ida: 9,
+    tim: 11
+  };
+  ages = (function() {
+    _a = []; _b = years_old;
+    for (child in _b) { if (__hasProp.call(_b, child)) {
+      age = _b[child];
+      _a.push(child + " is " + age);
+    }}
+    return _a;
+  }).call(this);
+})();

documentation/js/object_extraction.js

@@ -0,0 +1,17 @@
+(function(){
+  var _a, _b, _c, city, futurists, poet, street;
+  futurists = {
+    sculptor: "Umberto Boccioni",
+    painter: "Vladimir Burliuk",
+    poet: {
+      name: "F.T. Marinetti",
+      address: ["Via Roma 42R", "Bellagio, Italy 22021"]
+    }
+  };
+  _a = futurists;
+  _b = _a.poet;
+  poet = _b.name;
+  _c = _b.address;
+  street = _c[0];
+  city = _c[1];
+})();

documentation/js/objects_and_arrays.js

@@ -0,0 +1,10 @@
+(function(){
+  var ages, matrix, song;
+  song = ["do", "re", "mi", "fa", "so"];
+  ages = {
+    max: 10,
+    ida: 9,
+    tim: 11
+  };
+  matrix = [1, 0, 1, 0, 0, 1, 1, 1, 0];
+})();

documentation/js/overview.js

@@ -0,0 +1,43 @@
+(function(){
+  var _a, _b, _c, cubed_list, list, math, num, number, opposite_day, race, square;
+  // Assignment:
+  number = 42;
+  opposite_day = true;
+  // Conditions:
+  if (opposite_day) {
+    number = -42;
+  }
+  // Functions:
+  square = function square(x) {
+    return x * x;
+  };
+  // Arrays:
+  list = [1, 2, 3, 4, 5];
+  // Objects:
+  math = {
+    root: Math.sqrt,
+    square: square,
+    cube: function cube(x) {
+      return x * square(x);
+    }
+  };
+  // Splats:
+  race = function race(winner) {
+    var runners;
+    runners = Array.prototype.slice.call(arguments, 1);
+    return print(winner, runners);
+  };
+  // Existence:
+  if ((typeof elvis !== "undefined" && elvis !== null)) {
+    alert("I knew it!");
+  }
+  // Array comprehensions:
+  cubed_list = (function() {
+    _a = []; _b = list;
+    for (_c = 0; _c < _b.length; _c++) {
+      num = _b[_c];
+      _a.push(math.cube(num));
+    }
+    return _a;
+  }).call(this);
+})();

documentation/js/parallel_assignment.js

@@ -0,0 +1,8 @@
+(function(){
+  var _a, and_switch, bait;
+  bait = 1000;
+  and_switch = 0;
+  _a = [and_switch, bait];
+  bait = _a[0];
+  and_switch = _a[1];
+})();

documentation/js/punctuation.js

@@ -0,0 +1,8 @@
+(function(){
+
+  // Comments start with hash marks. Periods mark the end of a block.
+  var left_hand = raining ? umbrella : parasol;
+  // To signal the beginning of the next expression,
+  // use "then", or a newline.
+  left_hand = raining ? umbrella : parasol;
+})();

documentation/js/range_comprehensions.js

@@ -0,0 +1,21 @@
+(function(){
+  var _a, _b, _c, _d, _e, countdown, egg_delivery, num;
+  countdown = (function() {
+    _a = []; _d = 10; _e = 1;
+    for (_c = 0, num=_d; (_d <= _e ? num <= _e : num >= _e); (_d <= _e ? num += 1 : num -= 1), _c++) {
+      _a.push(num);
+    }
+    return _a;
+  }).call(this);
+  egg_delivery = function egg_delivery() {
+    var _f, _g, _h, _i, _j, dozen_eggs, i;
+    _f = []; _i = 0; _j = eggs.length;
+    for (_h = 0, i=_i; (_i <= _j ? i < _j : i > _j); (_i <= _j ? i += 12 : i -= 12), _h++) {
+      _f.push((function() {
+        dozen_eggs = eggs.slice(i, i + 12);
+        return deliver(new egg_carton(dozen));
+      }).call(this));
+    }
+    return _f;
+  };
+})();

documentation/js/scope.js

@@ -0,0 +1,10 @@
+(function(){
+  var change_numbers, new_num, num;
+  num = 1;
+  change_numbers = function change_numbers() {
+    var new_num;
+    new_num = -1;
+    return num = 10;
+  };
+  new_num = change_numbers();
+})();

documentation/js/slices.js

@@ -0,0 +1,6 @@
+(function(){
+  var numbers, numbers_copy, three_to_six;
+  numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
+  three_to_six = numbers.slice(3, 6 + 1);
+  numbers_copy = numbers.slice(0, numbers.length);
+})();

documentation/js/soaks.js

@@ -0,0 +1,4 @@
+(function(){
+  var _a;
+  (_a = lottery.draw_winner()) == undefined ? undefined : _a.address == undefined ? undefined : _a.address.zipcode;
+})();

documentation/js/splats.js

@@ -0,0 +1,16 @@
+(function(){
+  var award_medals, contenders, gold, silver, the_field;
+  gold = (silver = (the_field = "unknown"));
+  award_medals = function award_medals(first, second) {
+    var rest;
+    rest = Array.prototype.slice.call(arguments, 2);
+    gold = first;
+    silver = second;
+    return the_field = rest;
+  };
+  contenders = ["Michael Phelps", "Liu Xiang", "Yao Ming", "Allyson Felix", "Shawn Johnson", "Roman Sebrle", "Guo Jingjing", "Tyson Gay", "Asafa Powell", "Usain Bolt"];
+  award_medals.apply(this, contenders);
+  alert("Gold: " + gold);
+  alert("Silver: " + silver);
+  alert("The Field: " + the_field);
+})();

documentation/js/splices.js

@@ -0,0 +1,5 @@
+(function(){
+  var numbers;
+  numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
+  numbers.splice.apply(numbers, [3, 6 - 3 + 1].concat([-3, -4, -5, -6]));
+})();

documentation/js/strings.js

@@ -0,0 +1,9 @@
+(function(){
+  var moby_dick;
+  moby_dick = "Call me Ishmael. Some years ago -- \
+never mind how long precisely -- having little \
+or no money in my purse, and nothing particular \
+to interest me on shore, I thought I would sail \
+about a little and see the watery part of the \
+world...";
+})();

documentation/js/super.js

@@ -0,0 +1,37 @@
+(function(){
+  var Animal, Horse, Snake, _a, _b, sam, tom;
+  Animal = function Animal() {  };
+  Animal.prototype.move = function move(meters) {
+    return alert(this.name + " moved " + meters + "m.");
+  };
+  Snake = function Snake(name) {
+    this.name = name;
+    return this;
+  };
+  _a = function(){};
+  _a.prototype = Animal.prototype;
+  Snake.__superClass__ = Animal.prototype;
+  Snake.prototype = new _a();
+  Snake.prototype.constructor = Snake;
+  Snake.prototype.move = function move() {
+    alert("Slithering...");
+    return Snake.__superClass__.move.call(this, 5);
+  };
+  Horse = function Horse(name) {
+    this.name = name;
+    return this;
+  };
+  _b = function(){};
+  _b.prototype = Animal.prototype;
+  Horse.__superClass__ = Animal.prototype;
+  Horse.prototype = new _b();
+  Horse.prototype.constructor = Horse;
+  Horse.prototype.move = function move() {
+    alert("Galloping...");
+    return Horse.__superClass__.move.call(this, 45);
+  };
+  sam = new Snake("Sammy the Python");
+  tom = new Horse("Tommy the Palomino");
+  sam.move();
+  tom.move();
+})();

documentation/js/switch.js

@@ -0,0 +1,18 @@
+(function(){
+  if (day === "Mon") {
+    go_to_work();
+  } else if (day === "Tue") {
+    go_to_the_park();
+  } else if (day === "Thu") {
+    go_ice_fishing();
+  } else if (day === "Fri" || day === "Sat") {
+    if (day === bingo_day) {
+      go_to_bingo();
+      go_dancing();
+    }
+  } else if (day === "Sun") {
+    go_to_church();
+  } else {
+    go_to_work();
+  }
+})();

documentation/js/try.js

@@ -0,0 +1,10 @@
+(function(){
+  try {
+    all_hell_breaks_loose();
+    cats_and_dogs_living_together();
+  } catch (error) {
+    print(error);
+  } finally {
+    clean_up();
+  }
+})();

documentation/js/while.js

@@ -0,0 +1,22 @@
+(function(){
+  var _a, lyrics, num;
+  // Econ 101
+  if (this.studying_economics) {
+    while (supply > demand) {
+      buy();
+    }
+    while (supply < demand) {
+      sell();
+    }
+  }
+  // Nursery Rhyme
+  num = 6;
+  lyrics = (function() {
+    _a = [];
+    while (num -= 1) {
+      _a.push(num + " little monkeys, jumping on the bed. \
+One fell out and bumped his head.");
+    }
+    return _a;
+  }).call(this);
+})();

documentation/underscore.html

@@ -0,0 +1,627 @@
+<!DOCTYPE html>
+
+<head>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <link rel="stylesheet" type="text/css" media="screen,projection,print" href="css/idle.css" />
+  <title>Underscore.coffee</title>
+
+</head>
+
+<body>
+<pre class="idle"><span class="line-numbers">   1 </span> 
+<span class="line-numbers">   2 </span>   <span class="Comment"><span class="Comment">#</span> Underscore.coffee</span>
+<span class="line-numbers">   3 </span>   <span class="Comment"><span class="Comment">#</span> (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.</span>
+<span class="line-numbers">   4 </span>   <span class="Comment"><span class="Comment">#</span> Underscore is freely distributable under the terms of the MIT license.</span>
+<span class="line-numbers">   5 </span>   <span class="Comment"><span class="Comment">#</span> Portions of Underscore are inspired by or borrowed from Prototype.js,</span>
+<span class="line-numbers">   6 </span>   <span class="Comment"><span class="Comment">#</span> Oliver Steele's Functional, and John Resig's Micro-Templating.</span>
+<span class="line-numbers">   7 </span>   <span class="Comment"><span class="Comment">#</span> For all details and documentation:</span>
+<span class="line-numbers">   8 </span>   <span class="Comment"><span class="Comment">#</span> http://documentcloud.github.com/underscore/</span>
+<span class="line-numbers">   9 </span> 
+<span class="line-numbers">  10 </span> 
+<span class="line-numbers">  11 </span>   <span class="Comment"><span class="Comment">#</span> ------------------------- Baseline setup ---------------------------------</span>
+<span class="line-numbers">  12 </span> 
+<span class="line-numbers">  13 </span>   <span class="Comment"><span class="Comment">#</span> Establish the root object, &quot;window&quot; in the browser, or &quot;global&quot; on the server.</span>
+<span class="line-numbers">  14 </span>   <span class="FunctionName">root</span><span class="Keyword">:</span> <span class="Variable">this</span>
+<span class="line-numbers">  15 </span> 
+<span class="line-numbers">  16 </span> 
+<span class="line-numbers">  17 </span>   <span class="Comment"><span class="Comment">#</span> Save the previous value of the &quot;_&quot; variable.</span>
+<span class="line-numbers">  18 </span>   <span class="FunctionName">previousUnderscore</span><span class="Keyword">:</span> root._
+<span class="line-numbers">  19 </span> 
+<span class="line-numbers">  20 </span> 
+<span class="line-numbers">  21 </span>   <span class="Comment"><span class="Comment">#</span> If Underscore is called as a function, it returns a wrapped object that</span>
+<span class="line-numbers">  22 </span>   <span class="Comment"><span class="Comment">#</span> can be used OO-style. This wrapper holds altered versions of all the</span>
+<span class="line-numbers">  23 </span>   <span class="Comment"><span class="Comment">#</span> underscore functions. Wrapped objects may be chained.</span>
+<span class="line-numbers">  24 </span>   <span class="FunctionName">wrapper</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers">  25 </span>     <span class="FunctionName">this._wrapped</span><span class="Keyword">:</span> obj
+<span class="line-numbers">  26 </span>     <span class="Variable">this</span>
+<span class="line-numbers">  27 </span> 
+<span class="line-numbers">  28 </span> 
+<span class="line-numbers">  29 </span>   <span class="Comment"><span class="Comment">#</span> Establish the object that gets thrown to break out of a loop iteration.</span>
+<span class="line-numbers">  30 </span>   <span class="FunctionName">breaker</span><span class="Keyword">:</span> <span class="Keyword">if</span> <span class="Keyword">typeof</span>(StopIteration) <span class="Keyword">is</span> <span class="String"><span class="String">'</span>undefined<span class="String">'</span></span> <span class="Keyword">then</span> <span class="String"><span class="String">'</span>__break__<span class="String">'</span></span> <span class="Keyword">else</span> StopIteration
+<span class="line-numbers">  31 </span> 
+<span class="line-numbers">  32 </span> 
+<span class="line-numbers">  33 </span>   <span class="Comment"><span class="Comment">#</span> Create a safe reference to the Underscore object forreference below.</span>
+<span class="line-numbers">  34 </span>   <span class="FunctionName">_</span><span class="Keyword">:</span> <span class="FunctionName">root._</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> <span class="Keyword">new</span> <span class="TypeName">wrapper</span>(obj)
+<span class="line-numbers">  35 </span> 
+<span class="line-numbers">  36 </span> 
+<span class="line-numbers">  37 </span>   <span class="Comment"><span class="Comment">#</span> Export the Underscore object for CommonJS.</span>
+<span class="line-numbers">  38 </span>   <span class="Keyword">if</span> <span class="Keyword">typeof</span>(exports) <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">'</span>undefined<span class="String">'</span></span> <span class="Keyword">then</span> <span class="FunctionName">exports._</span><span class="Keyword">:</span> _
+<span class="line-numbers">  39 </span> 
+<span class="line-numbers">  40 </span> 
+<span class="line-numbers">  41 </span>   <span class="Comment"><span class="Comment">#</span> Create quick reference variables for speed access to core prototypes.</span>
+<span class="line-numbers">  42 </span>   <span class="FunctionName">slice</span><span class="Keyword">:</span>                <span class="FunctionName">Array:</span><span class="Keyword">:</span>slice
+<span class="line-numbers">  43 </span>   <span class="FunctionName">unshift</span><span class="Keyword">:</span>              <span class="FunctionName">Array:</span><span class="Keyword">:</span>unshift
+<span class="line-numbers">  44 </span>   <span class="FunctionName">toString</span><span class="Keyword">:</span>             <span class="FunctionName">Object:</span><span class="Keyword">:</span>toString
+<span class="line-numbers">  45 </span>   <span class="FunctionName">hasOwnProperty</span><span class="Keyword">:</span>       <span class="FunctionName">Object:</span><span class="Keyword">:</span>hasOwnProperty
+<span class="line-numbers">  46 </span>   <span class="FunctionName">propertyIsEnumerable</span><span class="Keyword">:</span> <span class="FunctionName">Object:</span><span class="Keyword">:</span>propertyIsEnumerable
+<span class="line-numbers">  47 </span> 
+<span class="line-numbers">  48 </span> 
+<span class="line-numbers">  49 </span>   <span class="Comment"><span class="Comment">#</span> Current version.</span>
+<span class="line-numbers">  50 </span>   <span class="FunctionName">_.VERSION</span><span class="Keyword">:</span> <span class="String"><span class="String">'</span>0.5.8<span class="String">'</span></span>
+<span class="line-numbers">  51 </span> 
+<span class="line-numbers">  52 </span> 
+<span class="line-numbers">  53 </span>   <span class="Comment"><span class="Comment">#</span> ------------------------ Collection Functions: ---------------------------</span>
+<span class="line-numbers">  54 </span> 
+<span class="line-numbers">  55 </span>   <span class="Comment"><span class="Comment">#</span> The cornerstone, an each implementation.</span>
+<span class="line-numbers">  56 </span>   <span class="Comment"><span class="Comment">#</span> Handles objects implementing forEach, arrays, and raw objects.</span>
+<span class="line-numbers">  57 </span>   <span class="FunctionName">_.each</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers">  58 </span>     <span class="FunctionName">index</span><span class="Keyword">:</span> <span class="Number">0</span>
+<span class="line-numbers">  59 </span>     <span class="Keyword">try</span>
+<span class="line-numbers">  60 </span>       <span class="Keyword">return</span> obj.forEach(iterator, context) <span class="Keyword">if</span> obj.forEach
+<span class="line-numbers">  61 </span>       <span class="Keyword">if</span> _.isNumber(obj.length)
+<span class="line-numbers">  62 </span>         <span class="Keyword">return</span> iterator.call(context, obj[i], i, obj) <span class="Keyword">for</span> i <span class="Keyword">in</span> [<span class="Number">0</span>...obj.length]
+<span class="line-numbers">  63 </span>       iterator.call(context, val, key, obj) <span class="Keyword">for</span> key, val <span class="Keyword">of</span> obj
+<span class="line-numbers">  64 </span>     <span class="Keyword">catch</span> e
+<span class="line-numbers">  65 </span>       <span class="Keyword">throw</span> e <span class="Keyword">if</span> e <span class="Keyword">isnt</span> breaker
+<span class="line-numbers">  66 </span>     obj
+<span class="line-numbers">  67 </span> 
+<span class="line-numbers">  68 </span> 
+<span class="line-numbers">  69 </span>   <span class="Comment"><span class="Comment">#</span> Return the results of applying the iterator to each element. Use JavaScript</span>
+<span class="line-numbers">  70 </span>   <span class="Comment"><span class="Comment">#</span> 1.6's version of map, if possible.</span>
+<span class="line-numbers">  71 </span>   <span class="FunctionName">_.map</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers">  72 </span>     <span class="Keyword">return</span> obj.map(iterator, context) <span class="Keyword">if</span> (obj <span class="Keyword">and</span> _.isFunction(obj.map))
+<span class="line-numbers">  73 </span>     <span class="FunctionName">results</span><span class="Keyword">:</span> []
+<span class="line-numbers">  74 </span>     _.each obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers">  75 </span>       results.push(iterator.call(context, value, index, list))
+<span class="line-numbers">  76 </span>     results
+<span class="line-numbers">  77 </span> 
+<span class="line-numbers">  78 </span> 
+<span class="line-numbers">  79 </span>   <span class="Comment"><span class="Comment">#</span> Reduce builds up a single result from a list of values. Also known as</span>
+<span class="line-numbers">  80 </span>   <span class="Comment"><span class="Comment">#</span> inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.</span>
+<span class="line-numbers">  81 </span>   <span class="FunctionName">_.reduce</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, memo, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers">  82 </span>     <span class="Keyword">return</span> obj.reduce(_.bind(iterator, context), memo) <span class="Keyword">if</span> (obj <span class="Keyword">and</span> _.isFunction(obj.reduce))
+<span class="line-numbers">  83 </span>     _.each obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers">  84 </span>       <span class="FunctionName">memo</span><span class="Keyword">:</span> iterator.call(context, memo, value, index, list)
+<span class="line-numbers">  85 </span>     memo
+<span class="line-numbers">  86 </span> 
+<span class="line-numbers">  87 </span> 
+<span class="line-numbers">  88 </span>   <span class="Comment"><span class="Comment">#</span> The right-associative version of reduce, also known as foldr. Uses</span>
+<span class="line-numbers">  89 </span>   <span class="Comment"><span class="Comment">#</span> JavaScript 1.8's version of reduceRight, if available.</span>
+<span class="line-numbers">  90 </span>   <span class="FunctionName">_.reduceRight</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, memo, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers">  91 </span>     <span class="Keyword">return</span> obj.reduceRight(_.bind(iterator, context), memo) <span class="Keyword">if</span> (obj <span class="Keyword">and</span> _.isFunction(obj.reduceRight))
+<span class="line-numbers">  92 </span>     _.each _.clone(_.toArray(obj)).reverse(), <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers">  93 </span>       <span class="FunctionName">memo</span><span class="Keyword">:</span> iterator.call(context, memo, value, index, obj)
+<span class="line-numbers">  94 </span>     memo
+<span class="line-numbers">  95 </span> 
+<span class="line-numbers">  96 </span> 
+<span class="line-numbers">  97 </span>   <span class="Comment"><span class="Comment">#</span> Return the first value which passes a truth test.</span>
+<span class="line-numbers">  98 </span>   <span class="FunctionName">_.detect</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers">  99 </span>     <span class="FunctionName">result</span><span class="Keyword">:</span> <span class="BuiltInConstant">null</span>
+<span class="line-numbers"> 100 </span>     _.each obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 101 </span>       <span class="Keyword">if</span> iterator.call(context, value, index, list)
+<span class="line-numbers"> 102 </span>         <span class="FunctionName">result</span><span class="Keyword">:</span> value
+<span class="line-numbers"> 103 </span>         _.breakLoop()
+<span class="line-numbers"> 104 </span>     result
+<span class="line-numbers"> 105 </span> 
+<span class="line-numbers"> 106 </span> 
+<span class="line-numbers"> 107 </span>   <span class="Comment"><span class="Comment">#</span> Return all the elements that pass a truth test. Use JavaScript 1.6's</span>
+<span class="line-numbers"> 108 </span>   <span class="Comment"><span class="Comment">#</span> filter(), if it exists.</span>
+<span class="line-numbers"> 109 </span>   <span class="FunctionName">_.select</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 110 </span>     <span class="Keyword">if</span> obj <span class="Keyword">and</span> _.isFunction(obj.filter) <span class="Keyword">then</span> <span class="Keyword">return</span> obj.filter(iterator, context)
+<span class="line-numbers"> 111 </span>     <span class="FunctionName">results</span><span class="Keyword">:</span> []
+<span class="line-numbers"> 112 </span>     _.each obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 113 </span>       results.push(value) <span class="Keyword">if</span> iterator.call(context, value, index, list)
+<span class="line-numbers"> 114 </span>     results
+<span class="line-numbers"> 115 </span> 
+<span class="line-numbers"> 116 </span> 
+<span class="line-numbers"> 117 </span>   <span class="Comment"><span class="Comment">#</span> Return all the elements for which a truth test fails.</span>
+<span class="line-numbers"> 118 </span>   <span class="FunctionName">_.reject</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 119 </span>     <span class="FunctionName">results</span><span class="Keyword">:</span> []
+<span class="line-numbers"> 120 </span>     _.each obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 121 </span>       results.push(value) <span class="Keyword">if</span> <span class="Keyword">not</span> iterator.call(context, value, index, list)
+<span class="line-numbers"> 122 </span>     results
+<span class="line-numbers"> 123 </span> 
+<span class="line-numbers"> 124 </span> 
+<span class="line-numbers"> 125 </span>   <span class="Comment"><span class="Comment">#</span> Determine whether all of the elements match a truth test. Delegate to</span>
+<span class="line-numbers"> 126 </span>   <span class="Comment"><span class="Comment">#</span> JavaScript 1.6's every(), if it is present.</span>
+<span class="line-numbers"> 127 </span>   <span class="FunctionName">_.all</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 128 </span>     iterator <span class="Keyword">||</span><span class="Keyword">=</span> _.identity
+<span class="line-numbers"> 129 </span>     <span class="Keyword">return</span> obj.every(iterator, context) <span class="Keyword">if</span> obj <span class="Keyword">and</span> _.isFunction(obj.every)
+<span class="line-numbers"> 130 </span>     <span class="FunctionName">result</span><span class="Keyword">:</span> <span class="BuiltInConstant">true</span>
+<span class="line-numbers"> 131 </span>     _.each obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 132 </span>       _.breakLoop() <span class="Keyword">unless</span> (<span class="FunctionName">result</span><span class="Keyword">:</span> result <span class="Keyword">and</span> iterator.call(context, value, index, list))
+<span class="line-numbers"> 133 </span>     result
+<span class="line-numbers"> 134 </span> 
+<span class="line-numbers"> 135 </span> 
+<span class="line-numbers"> 136 </span>   <span class="Comment"><span class="Comment">#</span> Determine if at least one element in the object matches a truth test. Use</span>
+<span class="line-numbers"> 137 </span>   <span class="Comment"><span class="Comment">#</span> JavaScript 1.6's some(), if it exists.</span>
+<span class="line-numbers"> 138 </span>   <span class="FunctionName">_.any</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 139 </span>     iterator <span class="Keyword">||</span><span class="Keyword">=</span> _.identity
+<span class="line-numbers"> 140 </span>     <span class="Keyword">return</span> obj.some(iterator, context) <span class="Keyword">if</span> obj <span class="Keyword">and</span> _.isFunction(obj.some)
+<span class="line-numbers"> 141 </span>     <span class="FunctionName">result</span><span class="Keyword">:</span> <span class="BuiltInConstant">false</span>
+<span class="line-numbers"> 142 </span>     _.each obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 143 </span>       _.breakLoop() <span class="Keyword">if</span> (<span class="FunctionName">result</span><span class="Keyword">:</span> iterator.call(context, value, index, list))
+<span class="line-numbers"> 144 </span>     result
+<span class="line-numbers"> 145 </span> 
+<span class="line-numbers"> 146 </span> 
+<span class="line-numbers"> 147 </span>   <span class="Comment"><span class="Comment">#</span> Determine if a given value is included in the array or object,</span>
+<span class="line-numbers"> 148 </span>   <span class="Comment"><span class="Comment">#</span> based on '==='.</span>
+<span class="line-numbers"> 149 </span>   <span class="FunctionName">_.include</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, target</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 150 </span>     <span class="Keyword">return</span> _.indexOf(obj, target) <span class="Keyword">isnt</span> <span class="Keyword">-</span><span class="Number">1</span> <span class="Keyword">if</span> obj <span class="Keyword">and</span> _.isFunction(obj.indexOf)
+<span class="line-numbers"> 151 </span>     <span class="Keyword">for</span> key, val <span class="Keyword">of</span> obj
+<span class="line-numbers"> 152 </span>       <span class="Keyword">return</span> <span class="BuiltInConstant">true</span> <span class="Keyword">if</span> val <span class="Keyword">is</span> target
+<span class="line-numbers"> 153 </span>     <span class="BuiltInConstant">false</span>
+<span class="line-numbers"> 154 </span> 
+<span class="line-numbers"> 155 </span> 
+<span class="line-numbers"> 156 </span>   <span class="Comment"><span class="Comment">#</span> Invoke a method with arguments on every item in a collection.</span>
+<span class="line-numbers"> 157 </span>   <span class="FunctionName">_.invoke</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, method</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 158 </span>     <span class="FunctionName">args</span><span class="Keyword">:</span> _.rest(arguments, <span class="Number">2</span>)
+<span class="line-numbers"> 159 </span>     (<span class="Keyword">if</span> method <span class="Keyword">then</span> val[method] <span class="Keyword">else</span> val).apply(val, args) <span class="Keyword">for</span> val <span class="Keyword">in</span> obj
+<span class="line-numbers"> 160 </span> 
+<span class="line-numbers"> 161 </span> 
+<span class="line-numbers"> 162 </span>   <span class="Comment"><span class="Comment">#</span> Convenience version of a common use case of map: fetching a property.</span>
+<span class="line-numbers"> 163 </span>   <span class="FunctionName">_.pluck</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, key</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 164 </span>     _.map(obj, (<span class="FunctionArgument">(</span><span class="FunctionArgument">val</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> val[key]))
+<span class="line-numbers"> 165 </span> 
+<span class="line-numbers"> 166 </span> 
+<span class="line-numbers"> 167 </span>   <span class="Comment"><span class="Comment">#</span> Return the maximum item or (item-based computation).</span>
+<span class="line-numbers"> 168 </span>   <span class="FunctionName">_.max</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 169 </span>     <span class="Keyword">return</span> Math.max.apply(Math, obj) <span class="Keyword">if</span> <span class="Keyword">not</span> iterator <span class="Keyword">and</span> _.isArray(obj)
+<span class="line-numbers"> 170 </span>     <span class="FunctionName">result</span><span class="Keyword">:</span> {<span class="FunctionName">computed</span><span class="Keyword">:</span> <span class="Keyword">-</span><span class="BuiltInConstant">Infinity</span>}
+<span class="line-numbers"> 171 </span>     _.each obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 172 </span>       <span class="FunctionName">computed</span><span class="Keyword">:</span> <span class="Keyword">if</span> iterator <span class="Keyword">then</span> iterator.call(context, value, index, list) <span class="Keyword">else</span> value
+<span class="line-numbers"> 173 </span>       computed <span class="Keyword">&gt;=</span> result.computed <span class="Keyword">and</span> (<span class="FunctionName">result</span><span class="Keyword">:</span> {<span class="FunctionName">value</span><span class="Keyword">:</span> value, <span class="FunctionName">computed</span><span class="Keyword">:</span> computed})
+<span class="line-numbers"> 174 </span>     result.value
+<span class="line-numbers"> 175 </span> 
+<span class="line-numbers"> 176 </span> 
+<span class="line-numbers"> 177 </span>   <span class="Comment"><span class="Comment">#</span> Return the minimum element (or element-based computation).</span>
+<span class="line-numbers"> 178 </span>   <span class="FunctionName">_.min</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 179 </span>     <span class="Keyword">return</span> Math.min.apply(Math, obj) <span class="Keyword">if</span> <span class="Keyword">not</span> iterator <span class="Keyword">and</span> _.isArray(obj)
+<span class="line-numbers"> 180 </span>     <span class="FunctionName">result</span><span class="Keyword">:</span> {<span class="FunctionName">computed</span><span class="Keyword">:</span> <span class="BuiltInConstant">Infinity</span>}
+<span class="line-numbers"> 181 </span>     _.each obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 182 </span>       <span class="FunctionName">computed</span><span class="Keyword">:</span> <span class="Keyword">if</span> iterator <span class="Keyword">then</span> iterator.call(context, value, index, list) <span class="Keyword">else</span> value
+<span class="line-numbers"> 183 </span>       computed <span class="Keyword">&lt;</span> result.computed <span class="Keyword">and</span> (<span class="FunctionName">result</span><span class="Keyword">:</span> {<span class="FunctionName">value</span><span class="Keyword">:</span> value, <span class="FunctionName">computed</span><span class="Keyword">:</span> computed})
+<span class="line-numbers"> 184 </span>     result.value
+<span class="line-numbers"> 185 </span> 
+<span class="line-numbers"> 186 </span> 
+<span class="line-numbers"> 187 </span>   <span class="Comment"><span class="Comment">#</span> Sort the object's values by a criteria produced by an iterator.</span>
+<span class="line-numbers"> 188 </span>   <span class="FunctionName">_.sortBy</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, iterator, context</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 189 </span>     _.pluck(((_.map obj, <span class="FunctionArgument">(</span><span class="FunctionArgument">value, index, list</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 190 </span>       {<span class="FunctionName">value</span><span class="Keyword">:</span> value, <span class="FunctionName">criteria</span><span class="Keyword">:</span> iterator.call(context, value, index, list)}
+<span class="line-numbers"> 191 </span>     ).sort(<span class="FunctionArgument">(</span><span class="FunctionArgument">left, right</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 192 </span>       <span class="FunctionName">a</span><span class="Keyword">:</span> left.criteria; <span class="FunctionName">b</span><span class="Keyword">:</span> right.criteria
+<span class="line-numbers"> 193 </span>       <span class="Keyword">if</span> a <span class="Keyword">&lt;</span> b <span class="Keyword">then</span> <span class="Keyword">-</span><span class="Number">1</span> <span class="Keyword">else</span> <span class="Keyword">if</span> a <span class="Keyword">&gt;</span> b <span class="Keyword">then</span> <span class="Number">1</span> <span class="Keyword">else</span> <span class="Number">0</span>
+<span class="line-numbers"> 194 </span>     )), <span class="String"><span class="String">'</span>value<span class="String">'</span></span>)
+<span class="line-numbers"> 195 </span> 
+<span class="line-numbers"> 196 </span> 
+<span class="line-numbers"> 197 </span>   <span class="Comment"><span class="Comment">#</span> Use a comparator function to figure out at what index an object should</span>
+<span class="line-numbers"> 198 </span>   <span class="Comment"><span class="Comment">#</span> be inserted so as to maintain order. Uses binary search.</span>
+<span class="line-numbers"> 199 </span>   <span class="FunctionName">_.sortedIndex</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array, obj, iterator</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 200 </span>     iterator <span class="Keyword">||</span><span class="Keyword">=</span> _.identity
+<span class="line-numbers"> 201 </span>     <span class="FunctionName">low</span><span class="Keyword">:</span> <span class="Number">0</span>; <span class="FunctionName">high</span><span class="Keyword">:</span> array.length
+<span class="line-numbers"> 202 </span>     <span class="Keyword">while</span> low <span class="Keyword">&lt;</span> high
+<span class="line-numbers"> 203 </span>       <span class="FunctionName">mid</span><span class="Keyword">:</span> (low <span class="Keyword">+</span> high) <span class="Keyword">&gt;</span><span class="Keyword">&gt;</span> <span class="Number">1</span>
+<span class="line-numbers"> 204 </span>       <span class="Keyword">if</span> iterator(array[mid]) <span class="Keyword">&lt;</span> iterator(obj) <span class="Keyword">then</span> <span class="FunctionName">low</span><span class="Keyword">:</span> mid <span class="Keyword">+</span> <span class="Number">1</span> <span class="Keyword">else</span> <span class="FunctionName">high</span><span class="Keyword">:</span> mid
+<span class="line-numbers"> 205 </span>     low
+<span class="line-numbers"> 206 </span> 
+<span class="line-numbers"> 207 </span> 
+<span class="line-numbers"> 208 </span>   <span class="Comment"><span class="Comment">#</span> Convert anything iterable into a real, live array.</span>
+<span class="line-numbers"> 209 </span>   <span class="FunctionName">_.toArray</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">iterable</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 210 </span>     <span class="Keyword">return</span> []                   <span class="Keyword">if</span> (<span class="Keyword">!</span>iterable)
+<span class="line-numbers"> 211 </span>     <span class="Keyword">return</span> iterable.toArray()   <span class="Keyword">if</span> (iterable.toArray)
+<span class="line-numbers"> 212 </span>     <span class="Keyword">return</span> iterable             <span class="Keyword">if</span> (_.isArray(iterable))
+<span class="line-numbers"> 213 </span>     <span class="Keyword">return</span> slice.call(iterable) <span class="Keyword">if</span> (_.isArguments(iterable))
+<span class="line-numbers"> 214 </span>     _.values(iterable)
+<span class="line-numbers"> 215 </span> 
+<span class="line-numbers"> 216 </span> 
+<span class="line-numbers"> 217 </span>   <span class="Comment"><span class="Comment">#</span> Return the number of elements in an object.</span>
+<span class="line-numbers"> 218 </span>   <span class="FunctionName">_.size</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> _.toArray(obj).length
+<span class="line-numbers"> 219 </span> 
+<span class="line-numbers"> 220 </span> 
+<span class="line-numbers"> 221 </span>   <span class="Comment"><span class="Comment">#</span> -------------------------- Array Functions: ------------------------------</span>
+<span class="line-numbers"> 222 </span> 
+<span class="line-numbers"> 223 </span>   <span class="Comment"><span class="Comment">#</span> Get the first element of an array. Passing &quot;n&quot; will return the first N</span>
+<span class="line-numbers"> 224 </span>   <span class="Comment"><span class="Comment">#</span> values in the array. Aliased as &quot;head&quot;. The &quot;guard&quot; check allows it to work</span>
+<span class="line-numbers"> 225 </span>   <span class="Comment"><span class="Comment">#</span> with _.map.</span>
+<span class="line-numbers"> 226 </span>   <span class="FunctionName">_.first</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array, n, guard</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 227 </span>     <span class="Keyword">if</span> n <span class="Keyword">and</span> <span class="Keyword">not</span> guard <span class="Keyword">then</span> slice.call(array, <span class="Number">0</span>, n) <span class="Keyword">else</span> array[<span class="Number">0</span>]
+<span class="line-numbers"> 228 </span> 
+<span class="line-numbers"> 229 </span> 
+<span class="line-numbers"> 230 </span>   <span class="Comment"><span class="Comment">#</span> Returns everything but the first entry of the array. Aliased as &quot;tail&quot;.</span>
+<span class="line-numbers"> 231 </span>   <span class="Comment"><span class="Comment">#</span> Especially useful on the arguments object. Passing an &quot;index&quot; will return</span>
+<span class="line-numbers"> 232 </span>   <span class="Comment"><span class="Comment">#</span> the rest of the values in the array from that index onward. The &quot;guard&quot;</span>
+<span class="line-numbers"> 233 </span>   <span class="Comment"><span class="Comment">#</span> check allows it to work with _.map.</span>
+<span class="line-numbers"> 234 </span>   <span class="FunctionName">_.rest</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array, index, guard</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 235 </span>     slice.call(array, <span class="Keyword">if</span> _.isUndefined(index) <span class="Keyword">or</span> guard <span class="Keyword">then</span> <span class="Number">1</span> <span class="Keyword">else</span> index)
+<span class="line-numbers"> 236 </span> 
+<span class="line-numbers"> 237 </span> 
+<span class="line-numbers"> 238 </span>   <span class="Comment"><span class="Comment">#</span> Get the last element of an array.</span>
+<span class="line-numbers"> 239 </span>   <span class="FunctionName">_.last</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> array[array.length <span class="Keyword">-</span> <span class="Number">1</span>]
+<span class="line-numbers"> 240 </span> 
+<span class="line-numbers"> 241 </span> 
+<span class="line-numbers"> 242 </span>   <span class="Comment"><span class="Comment">#</span> Trim out all falsy values from an array.</span>
+<span class="line-numbers"> 243 </span>   <span class="FunctionName">_.compact</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> item <span class="Keyword">for</span> item <span class="Keyword">in</span> array <span class="Keyword">when</span> item
+<span class="line-numbers"> 244 </span> 
+<span class="line-numbers"> 245 </span> 
+<span class="line-numbers"> 246 </span>   <span class="Comment"><span class="Comment">#</span> Return a completely flattened version of an array.</span>
+<span class="line-numbers"> 247 </span>   <span class="FunctionName">_.flatten</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 248 </span>     _.reduce array, [], <span class="FunctionArgument">(</span><span class="FunctionArgument">memo, value</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 249 </span>       <span class="Keyword">return</span> memo.concat(_.flatten(value)) <span class="Keyword">if</span> _.isArray(value)
+<span class="line-numbers"> 250 </span>       memo.push(value)
+<span class="line-numbers"> 251 </span>       memo
+<span class="line-numbers"> 252 </span> 
+<span class="line-numbers"> 253 </span> 
+<span class="line-numbers"> 254 </span>   <span class="Comment"><span class="Comment">#</span> Return a version of the array that does not contain the specified value(s).</span>
+<span class="line-numbers"> 255 </span>   <span class="FunctionName">_.without</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 256 </span>     <span class="FunctionName">values</span><span class="Keyword">:</span> _.rest(arguments)
+<span class="line-numbers"> 257 </span>     val <span class="Keyword">for</span> val <span class="Keyword">in</span> _.toArray(array) <span class="Keyword">when</span> <span class="Keyword">not</span> _.include(values, val)
+<span class="line-numbers"> 258 </span> 
+<span class="line-numbers"> 259 </span> 
+<span class="line-numbers"> 260 </span>   <span class="Comment"><span class="Comment">#</span> Produce a duplicate-free version of the array. If the array has already</span>
+<span class="line-numbers"> 261 </span>   <span class="Comment"><span class="Comment">#</span> been sorted, you have the option of using a faster algorithm.</span>
+<span class="line-numbers"> 262 </span>   <span class="FunctionName">_.uniq</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array, isSorted</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 263 </span>     <span class="FunctionName">memo</span><span class="Keyword">:</span> []
+<span class="line-numbers"> 264 </span>     <span class="Keyword">for</span> el, i <span class="Keyword">in</span> _.toArray(array)
+<span class="line-numbers"> 265 </span>       memo.push(el) <span class="Keyword">if</span> i <span class="Keyword">is</span> <span class="Number">0</span> <span class="Keyword">||</span> (<span class="Keyword">if</span> isSorted <span class="Keyword">is</span> <span class="BuiltInConstant">true</span> <span class="Keyword">then</span> _.last(memo) <span class="Keyword">isnt</span> el <span class="Keyword">else</span> <span class="Keyword">not</span> _.include(memo, el))
+<span class="line-numbers"> 266 </span>     memo
+<span class="line-numbers"> 267 </span> 
+<span class="line-numbers"> 268 </span> 
+<span class="line-numbers"> 269 </span>   <span class="Comment"><span class="Comment">#</span> Produce an array that contains every item shared between all the</span>
+<span class="line-numbers"> 270 </span>   <span class="Comment"><span class="Comment">#</span> passed-in arrays.</span>
+<span class="line-numbers"> 271 </span>   <span class="FunctionName">_.intersect</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 272 </span>     <span class="FunctionName">rest</span><span class="Keyword">:</span> _.rest(arguments)
+<span class="line-numbers"> 273 </span>     _.select _.uniq(array), <span class="FunctionArgument">(</span><span class="FunctionArgument">item</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 274 </span>       _.all rest, <span class="FunctionArgument">(</span><span class="FunctionArgument">other</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 275 </span>         _.indexOf(other, item) <span class="Keyword">&gt;=</span> <span class="Number">0</span>
+<span class="line-numbers"> 276 </span> 
+<span class="line-numbers"> 277 </span> 
+<span class="line-numbers"> 278 </span>   <span class="Comment"><span class="Comment">#</span> Zip together multiple lists into a single array -- elements that share</span>
+<span class="line-numbers"> 279 </span>   <span class="Comment"><span class="Comment">#</span> an index go together.</span>
+<span class="line-numbers"> 280 </span>   <span class="FunctionName">_.zip</span><span class="Keyword">:</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 281 </span>     <span class="FunctionName">length</span><span class="Keyword">:</span>     _.max(_.pluck(arguments, <span class="String"><span class="String">'</span>length<span class="String">'</span></span>))
+<span class="line-numbers"> 282 </span>     <span class="FunctionName">results</span><span class="Keyword">:</span>    <span class="Keyword">new</span> <span class="TypeName">Array</span>(length)
+<span class="line-numbers"> 283 </span>     <span class="Keyword">for</span> i <span class="Keyword">in</span> [<span class="Number">0</span>...length]
+<span class="line-numbers"> 284 </span>       results[i]<span class="Keyword">:</span> _.pluck(arguments, String(i))
+<span class="line-numbers"> 285 </span>     results
+<span class="line-numbers"> 286 </span> 
+<span class="line-numbers"> 287 </span> 
+<span class="line-numbers"> 288 </span>   <span class="Comment"><span class="Comment">#</span> If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),</span>
+<span class="line-numbers"> 289 </span>   <span class="Comment"><span class="Comment">#</span> we need this function. Return the position of the first occurence of an</span>
+<span class="line-numbers"> 290 </span>   <span class="Comment"><span class="Comment">#</span> item in an array, or -1 if the item is not included in the array.</span>
+<span class="line-numbers"> 291 </span>   <span class="FunctionName">_.indexOf</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array, item</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 292 </span>     <span class="Keyword">return</span> array.indexOf(item) <span class="Keyword">if</span> array.indexOf
+<span class="line-numbers"> 293 </span>     <span class="FunctionName">i</span><span class="Keyword">:</span> <span class="Number">0</span>; <span class="FunctionName">l</span><span class="Keyword">:</span> array.length
+<span class="line-numbers"> 294 </span>     <span class="Keyword">while</span> l <span class="Keyword">-</span> i
+<span class="line-numbers"> 295 </span>       <span class="Keyword">if</span> array[i] <span class="Keyword">is</span> item <span class="Keyword">then</span> <span class="Keyword">return</span> i <span class="Keyword">else</span> i<span class="Keyword">++</span>
+<span class="line-numbers"> 296 </span>     <span class="Keyword">-</span><span class="Number">1</span>
+<span class="line-numbers"> 297 </span> 
+<span class="line-numbers"> 298 </span> 
+<span class="line-numbers"> 299 </span>   <span class="Comment"><span class="Comment">#</span> Provide JavaScript 1.6's lastIndexOf, delegating to the native function,</span>
+<span class="line-numbers"> 300 </span>   <span class="Comment"><span class="Comment">#</span> if possible.</span>
+<span class="line-numbers"> 301 </span>   <span class="FunctionName">_.lastIndexOf</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">array, item</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 302 </span>     <span class="Keyword">return</span> array.lastIndexOf(item) <span class="Keyword">if</span> array.lastIndexOf
+<span class="line-numbers"> 303 </span>     <span class="FunctionName">i</span><span class="Keyword">:</span> array.length
+<span class="line-numbers"> 304 </span>     <span class="Keyword">while</span> i
+<span class="line-numbers"> 305 </span>       <span class="Keyword">if</span> array[i] <span class="Keyword">is</span> item <span class="Keyword">then</span> <span class="Keyword">return</span> i <span class="Keyword">else</span> i<span class="Keyword">--</span>
+<span class="line-numbers"> 306 </span>     <span class="Keyword">-</span><span class="Number">1</span>
+<span class="line-numbers"> 307 </span> 
+<span class="line-numbers"> 308 </span> 
+<span class="line-numbers"> 309 </span>   <span class="Comment"><span class="Comment">#</span> Generate an integer Array containing an arithmetic progression. A port of</span>
+<span class="line-numbers"> 310 </span>   <span class="Comment"><span class="Comment">#</span> the native Python range() function. See:</span>
+<span class="line-numbers"> 311 </span>   <span class="Comment"><span class="Comment">#</span> http://docs.python.org/library/functions.html#range</span>
+<span class="line-numbers"> 312 </span>   <span class="FunctionName">_.range</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">start, stop, step</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 313 </span>     <span class="FunctionName">a</span><span class="Keyword">:</span>        arguments
+<span class="line-numbers"> 314 </span>     <span class="FunctionName">solo</span><span class="Keyword">:</span>     a.length <span class="Keyword">&lt;=</span> <span class="Number">1</span>
+<span class="line-numbers"> 315 </span>     <span class="FunctionName">i</span><span class="Keyword">:</span> <span class="FunctionName">start</span><span class="Keyword">:</span> <span class="Keyword">if</span> solo <span class="Keyword">then</span> <span class="Number">0</span> <span class="Keyword">else</span> a[<span class="Number">0</span>]
+<span class="line-numbers"> 316 </span>     <span class="FunctionName">stop</span><span class="Keyword">:</span>     <span class="Keyword">if</span> solo <span class="Keyword">then</span> a[<span class="Number">0</span>] <span class="Keyword">else</span> a[<span class="Number">1</span>]
+<span class="line-numbers"> 317 </span>     <span class="FunctionName">step</span><span class="Keyword">:</span>     a[<span class="Number">2</span>] <span class="Keyword">or</span> <span class="Number">1</span>
+<span class="line-numbers"> 318 </span>     <span class="FunctionName">len</span><span class="Keyword">:</span>      Math.ceil((stop <span class="Keyword">-</span> start) <span class="Keyword">/</span> step)
+<span class="line-numbers"> 319 </span>     <span class="Keyword">return</span> [] <span class="Keyword">if</span> len <span class="Keyword">&lt;=</span> <span class="Number">0</span>
+<span class="line-numbers"> 320 </span>     <span class="FunctionName">range</span><span class="Keyword">:</span>    <span class="Keyword">new</span> <span class="TypeName">Array</span>(len)
+<span class="line-numbers"> 321 </span>     <span class="FunctionName">idx</span><span class="Keyword">:</span>      <span class="Number">0</span>
+<span class="line-numbers"> 322 </span>     <span class="Keyword">while</span> <span class="BuiltInConstant">true</span>
+<span class="line-numbers"> 323 </span>       <span class="Keyword">return</span> range <span class="Keyword">if</span> (<span class="Keyword">if</span> step <span class="Keyword">&gt;</span> <span class="Number">0</span> <span class="Keyword">then</span> i <span class="Keyword">-</span> stop <span class="Keyword">else</span> stop <span class="Keyword">-</span> i) <span class="Keyword">&gt;=</span> <span class="Number">0</span>
+<span class="line-numbers"> 324 </span>       range[idx]<span class="Keyword">:</span> i
+<span class="line-numbers"> 325 </span>       idx<span class="Keyword">++</span>
+<span class="line-numbers"> 326 </span>       i<span class="Keyword">+</span><span class="Keyword">=</span> step
+<span class="line-numbers"> 327 </span> 
+<span class="line-numbers"> 328 </span> 
+<span class="line-numbers"> 329 </span>   <span class="Comment"><span class="Comment">#</span> ----------------------- Function Functions: -----------------------------</span>
+<span class="line-numbers"> 330 </span> 
+<span class="line-numbers"> 331 </span>   <span class="Comment"><span class="Comment">#</span> Create a function bound to a given object (assigning 'this', and arguments,</span>
+<span class="line-numbers"> 332 </span>   <span class="Comment"><span class="Comment">#</span> optionally). Binding with arguments is also known as 'curry'.</span>
+<span class="line-numbers"> 333 </span>   <span class="FunctionName">_.bind</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">func, obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 334 </span>     <span class="FunctionName">args</span><span class="Keyword">:</span> _.rest(arguments, <span class="Number">2</span>)
+<span class="line-numbers"> 335 </span>     <span class="Storage">-&gt;</span> func.apply(obj <span class="Keyword">or</span> root, args.concat(arguments))
+<span class="line-numbers"> 336 </span> 
+<span class="line-numbers"> 337 </span> 
+<span class="line-numbers"> 338 </span>   <span class="Comment"><span class="Comment">#</span> Bind all of an object's methods to that object. Useful for ensuring that</span>
+<span class="line-numbers"> 339 </span>   <span class="Comment"><span class="Comment">#</span> all callbacks defined on an object belong to it.</span>
+<span class="line-numbers"> 340 </span>   <span class="FunctionName">_.bindAll</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 341 </span>     <span class="FunctionName">funcs</span><span class="Keyword">:</span> <span class="Keyword">if</span> arguments.length <span class="Keyword">&gt;</span> <span class="Number">1</span> <span class="Keyword">then</span> _.rest(arguments) <span class="Keyword">else</span> _.functions(obj)
+<span class="line-numbers"> 342 </span>     _.each(funcs, <span class="FunctionArgument">(</span><span class="FunctionArgument">f</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> obj[f]<span class="Keyword">:</span> _.bind(obj[f], obj))
+<span class="line-numbers"> 343 </span>     obj
+<span class="line-numbers"> 344 </span> 
+<span class="line-numbers"> 345 </span> 
+<span class="line-numbers"> 346 </span>   <span class="Comment"><span class="Comment">#</span> Delays a function for the given number of milliseconds, and then calls</span>
+<span class="line-numbers"> 347 </span>   <span class="Comment"><span class="Comment">#</span> it with the arguments supplied.</span>
+<span class="line-numbers"> 348 </span>   <span class="FunctionName">_.delay</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">func, wait</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 349 </span>     <span class="FunctionName">args</span><span class="Keyword">:</span> _.rest(arguments, <span class="Number">2</span>)
+<span class="line-numbers"> 350 </span>     setTimeout((<span class="Storage">-&gt;</span> func.apply(func, args)), wait)
+<span class="line-numbers"> 351 </span> 
+<span class="line-numbers"> 352 </span> 
+<span class="line-numbers"> 353 </span>   <span class="Comment"><span class="Comment">#</span> Defers a function, scheduling it to run after the current call stack has</span>
+<span class="line-numbers"> 354 </span>   <span class="Comment"><span class="Comment">#</span> cleared.</span>
+<span class="line-numbers"> 355 </span>   <span class="FunctionName">_.defer</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">func</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 356 </span>     _.delay.apply(_, [func, <span class="Number">1</span>].concat(_.rest(arguments)))
+<span class="line-numbers"> 357 </span> 
+<span class="line-numbers"> 358 </span> 
+<span class="line-numbers"> 359 </span>   <span class="Comment"><span class="Comment">#</span> Returns the first function passed as an argument to the second,</span>
+<span class="line-numbers"> 360 </span>   <span class="Comment"><span class="Comment">#</span> allowing you to adjust arguments, run code before and after, and</span>
+<span class="line-numbers"> 361 </span>   <span class="Comment"><span class="Comment">#</span> conditionally execute the original function.</span>
+<span class="line-numbers"> 362 </span>   <span class="FunctionName">_.wrap</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">func, wrapper</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 363 </span>     <span class="Storage">-&gt;</span> wrapper.apply(wrapper, [func].concat(arguments))
+<span class="line-numbers"> 364 </span> 
+<span class="line-numbers"> 365 </span> 
+<span class="line-numbers"> 366 </span>   <span class="Comment"><span class="Comment">#</span> Returns a function that is the composition of a list of functions, each</span>
+<span class="line-numbers"> 367 </span>   <span class="Comment"><span class="Comment">#</span> consuming the return value of the function that follows.</span>
+<span class="line-numbers"> 368 </span>   <span class="FunctionName">_.compose</span><span class="Keyword">:</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 369 </span>     <span class="FunctionName">funcs</span><span class="Keyword">:</span> arguments
+<span class="line-numbers"> 370 </span>     <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 371 </span>       <span class="FunctionName">args</span><span class="Keyword">:</span> arguments
+<span class="line-numbers"> 372 </span>       <span class="Keyword">for</span> i <span class="Keyword">in</span> [(funcs.length <span class="Keyword">-</span> <span class="Number">1</span>)..<span class="Number">0</span>]
+<span class="line-numbers"> 373 </span>         <span class="FunctionName">args</span><span class="Keyword">:</span> [funcs[i].apply(<span class="Variable">this</span>, args)]
+<span class="line-numbers"> 374 </span>       args[<span class="Number">0</span>]
+<span class="line-numbers"> 375 </span> 
+<span class="line-numbers"> 376 </span> 
+<span class="line-numbers"> 377 </span>   <span class="Comment"><span class="Comment">#</span> ------------------------- Object Functions: ----------------------------</span>
+<span class="line-numbers"> 378 </span> 
+<span class="line-numbers"> 379 </span>   <span class="Comment"><span class="Comment">#</span> Retrieve the names of an object's properties.</span>
+<span class="line-numbers"> 380 </span>   <span class="FunctionName">_.keys</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 381 </span>     <span class="Keyword">return</span> _.range(<span class="Number">0</span>, obj.length) <span class="Keyword">if</span> _.isArray(obj)
+<span class="line-numbers"> 382 </span>     key <span class="Keyword">for</span> key, val <span class="Keyword">of</span> obj
+<span class="line-numbers"> 383 </span> 
+<span class="line-numbers"> 384 </span> 
+<span class="line-numbers"> 385 </span>   <span class="Comment"><span class="Comment">#</span> Retrieve the values of an object's properties.</span>
+<span class="line-numbers"> 386 </span>   <span class="FunctionName">_.values</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 387 </span>     _.map(obj, _.identity)
+<span class="line-numbers"> 388 </span> 
+<span class="line-numbers"> 389 </span> 
+<span class="line-numbers"> 390 </span>   <span class="Comment"><span class="Comment">#</span> Return a sorted list of the function names available in Underscore.</span>
+<span class="line-numbers"> 391 </span>   <span class="FunctionName">_.functions</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 392 </span>     _.select(_.keys(obj), <span class="FunctionArgument">(</span><span class="FunctionArgument">key</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> _.isFunction(obj[key])).sort()
+<span class="line-numbers"> 393 </span> 
+<span class="line-numbers"> 394 </span> 
+<span class="line-numbers"> 395 </span>   <span class="Comment"><span class="Comment">#</span> Extend a given object with all of the properties in a source object.</span>
+<span class="line-numbers"> 396 </span>   <span class="FunctionName">_.extend</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">destination, source</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 397 </span>     <span class="Keyword">for</span> key, val <span class="Keyword">of</span> source
+<span class="line-numbers"> 398 </span>       destination[key]<span class="Keyword">:</span> val
+<span class="line-numbers"> 399 </span>     destination
+<span class="line-numbers"> 400 </span> 
+<span class="line-numbers"> 401 </span> 
+<span class="line-numbers"> 402 </span>   <span class="Comment"><span class="Comment">#</span> Create a (shallow-cloned) duplicate of an object.</span>
+<span class="line-numbers"> 403 </span>   <span class="FunctionName">_.clone</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 404 </span>     <span class="Keyword">return</span> obj.slice(<span class="Number">0</span>) <span class="Keyword">if</span> _.isArray(obj)
+<span class="line-numbers"> 405 </span>     _.extend({}, obj)
+<span class="line-numbers"> 406 </span> 
+<span class="line-numbers"> 407 </span> 
+<span class="line-numbers"> 408 </span>   <span class="Comment"><span class="Comment">#</span> Invokes interceptor with the obj, and then returns obj.</span>
+<span class="line-numbers"> 409 </span>   <span class="Comment"><span class="Comment">#</span> The primary purpose of this method is to &quot;tap into&quot; a method chain, in order to perform operations on intermediate results within the chain.</span>
+<span class="line-numbers"> 410 </span>   <span class="FunctionName">_.tap</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, interceptor</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 411 </span>     interceptor(obj)
+<span class="line-numbers"> 412 </span>     obj
+<span class="line-numbers"> 413 </span> 
+<span class="line-numbers"> 414 </span> 
+<span class="line-numbers"> 415 </span>   <span class="Comment"><span class="Comment">#</span> Perform a deep comparison to check if two objects are equal.</span>
+<span class="line-numbers"> 416 </span>   <span class="FunctionName">_.isEqual</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">a, b</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 417 </span>     <span class="Comment"><span class="Comment">#</span> Check object identity.</span>
+<span class="line-numbers"> 418 </span>     <span class="Keyword">return</span> <span class="BuiltInConstant">true</span> <span class="Keyword">if</span> a <span class="Keyword">is</span> b
+<span class="line-numbers"> 419 </span>     <span class="Comment"><span class="Comment">#</span> Different types?</span>
+<span class="line-numbers"> 420 </span>     <span class="FunctionName">atype</span><span class="Keyword">:</span> <span class="Keyword">typeof</span>(a); <span class="FunctionName">btype</span><span class="Keyword">:</span> <span class="Keyword">typeof</span>(b)
+<span class="line-numbers"> 421 </span>     <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> atype <span class="Keyword">isnt</span> btype
+<span class="line-numbers"> 422 </span>     <span class="Comment"><span class="Comment">#</span> Basic equality test (watch out for coercions).</span>
+<span class="line-numbers"> 423 </span>     <span class="Keyword">return</span> <span class="BuiltInConstant">true</span> <span class="Keyword">if</span> <span class="String"><span class="String">`</span>a == b<span class="String">`</span></span>
+<span class="line-numbers"> 424 </span>     <span class="Comment"><span class="Comment">#</span> One is falsy and the other truthy.</span>
+<span class="line-numbers"> 425 </span>     <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> (<span class="Keyword">!</span>a <span class="Keyword">and</span> b) <span class="Keyword">or</span> (a <span class="Keyword">and</span> <span class="Keyword">!</span>b)
+<span class="line-numbers"> 426 </span>     <span class="Comment"><span class="Comment">#</span> One of them implements an isEqual()?</span>
+<span class="line-numbers"> 427 </span>     <span class="Keyword">return</span> a.isEqual(b) <span class="Keyword">if</span> a.isEqual
+<span class="line-numbers"> 428 </span>     <span class="Comment"><span class="Comment">#</span> Check dates' integer values.</span>
+<span class="line-numbers"> 429 </span>     <span class="Keyword">return</span> a.getTime() <span class="Keyword">is</span> b.getTime() <span class="Keyword">if</span> _.isDate(a) <span class="Keyword">and</span> _.isDate(b)
+<span class="line-numbers"> 430 </span>     <span class="Comment"><span class="Comment">#</span> Both are NaN?</span>
+<span class="line-numbers"> 431 </span>     <span class="Keyword">return</span> <span class="BuiltInConstant">true</span> <span class="Keyword">if</span> _.isNaN(a) <span class="Keyword">and</span> _.isNaN(b)
+<span class="line-numbers"> 432 </span>     <span class="Comment"><span class="Comment">#</span> Compare regular expressions.</span>
+<span class="line-numbers"> 433 </span>     <span class="Keyword">if</span> _.isRegExp(a) <span class="Keyword">and</span> _.isRegExp(b)
+<span class="line-numbers"> 434 </span>       <span class="Keyword">return</span> a.source     <span class="Keyword">is</span> b.source <span class="Keyword">and</span>
+<span class="line-numbers"> 435 </span>              a.global     <span class="Keyword">is</span> b.global <span class="Keyword">and</span>
+<span class="line-numbers"> 436 </span>              a.ignoreCase <span class="Keyword">is</span> b.ignoreCase <span class="Keyword">and</span>
+<span class="line-numbers"> 437 </span>              a.multiline  <span class="Keyword">is</span> b.multiline
+<span class="line-numbers"> 438 </span>     <span class="Comment"><span class="Comment">#</span> If a is not an object by this point, we can't handle it.</span>
+<span class="line-numbers"> 439 </span>     <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> atype <span class="Keyword">isnt</span> <span class="String"><span class="String">'</span>object<span class="String">'</span></span>
+<span class="line-numbers"> 440 </span>     <span class="Comment"><span class="Comment">#</span> Check for different array lengths before comparing contents.</span>
+<span class="line-numbers"> 441 </span>     <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> a.length <span class="Keyword">and</span> (a.length <span class="Keyword">isnt</span> b.length)
+<span class="line-numbers"> 442 </span>     <span class="Comment"><span class="Comment">#</span> Nothing else worked, deep compare the contents.</span>
+<span class="line-numbers"> 443 </span>     <span class="FunctionName">aKeys</span><span class="Keyword">:</span> _.keys(a); <span class="FunctionName">bKeys</span><span class="Keyword">:</span> _.keys(b)
+<span class="line-numbers"> 444 </span>     <span class="Comment"><span class="Comment">#</span> Different object sizes?</span>
+<span class="line-numbers"> 445 </span>     <span class="Keyword">return</span> <span class="BuiltInConstant">false</span> <span class="Keyword">if</span> aKeys.length <span class="Keyword">isnt</span> bKeys.length
+<span class="line-numbers"> 446 </span>     <span class="Comment"><span class="Comment">#</span> Recursive comparison of contents.</span>
+<span class="line-numbers"> 447 </span>     <span class="Comment"><span class="Comment">#</span> for (var key in a) if (!_.isEqual(a[key], b[key])) return false;</span>
+<span class="line-numbers"> 448 </span>     <span class="Keyword">return</span> <span class="BuiltInConstant">true</span>
+<span class="line-numbers"> 449 </span> 
+<span class="line-numbers"> 450 </span> 
+<span class="line-numbers"> 451 </span>   <span class="Comment"><span class="Comment">#</span> Is a given array or object empty?</span>
+<span class="line-numbers"> 452 </span>   <span class="FunctionName">_.isEmpty</span><span class="Keyword">:</span>      <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> _.keys(obj).length <span class="Keyword">is</span> <span class="Number">0</span>
+<span class="line-numbers"> 453 </span> 
+<span class="line-numbers"> 454 </span> 
+<span class="line-numbers"> 455 </span>   <span class="Comment"><span class="Comment">#</span> Is a given value a DOM element?</span>
+<span class="line-numbers"> 456 </span>   <span class="FunctionName">_.isElement</span><span class="Keyword">:</span>    <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> obj <span class="Keyword">and</span> obj.nodeType <span class="Keyword">is</span> <span class="Number">1</span>
+<span class="line-numbers"> 457 </span> 
+<span class="line-numbers"> 458 </span> 
+<span class="line-numbers"> 459 </span>   <span class="Comment"><span class="Comment">#</span> Is a given value an array?</span>
+<span class="line-numbers"> 460 </span>   <span class="FunctionName">_.isArray</span><span class="Keyword">:</span>      <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">and</span> obj.concat <span class="Keyword">and</span> obj.unshift)
+<span class="line-numbers"> 461 </span> 
+<span class="line-numbers"> 462 </span> 
+<span class="line-numbers"> 463 </span>   <span class="Comment"><span class="Comment">#</span> Is a given variable an arguments object?</span>
+<span class="line-numbers"> 464 </span>   <span class="FunctionName">_.isArguments</span><span class="Keyword">:</span>  <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> obj <span class="Keyword">and</span> _.isNumber(obj.length) <span class="Keyword">and</span> <span class="Keyword">not</span> obj.concat <span class="Keyword">and</span>
+<span class="line-numbers"> 465 </span>                            <span class="Keyword">not</span> obj.substr <span class="Keyword">and</span> <span class="Keyword">not</span> obj.apply <span class="Keyword">and</span> <span class="Keyword">not</span> propertyIsEnumerable.call(obj, <span class="String"><span class="String">'</span>length<span class="String">'</span></span>)
+<span class="line-numbers"> 466 </span> 
+<span class="line-numbers"> 467 </span> 
+<span class="line-numbers"> 468 </span>   <span class="Comment"><span class="Comment">#</span> Is the given value a function?</span>
+<span class="line-numbers"> 469 </span>   <span class="FunctionName">_.isFunction</span><span class="Keyword">:</span>   <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">and</span> obj.constructor <span class="Keyword">and</span> obj.call <span class="Keyword">and</span> obj.apply)
+<span class="line-numbers"> 470 </span> 
+<span class="line-numbers"> 471 </span> 
+<span class="line-numbers"> 472 </span>   <span class="Comment"><span class="Comment">#</span> Is the given value a string?</span>
+<span class="line-numbers"> 473 </span>   <span class="FunctionName">_.isString</span><span class="Keyword">:</span>     <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">is</span> <span class="String"><span class="String">'</span><span class="String">'</span></span> <span class="Keyword">or</span> (obj <span class="Keyword">and</span> obj.charCodeAt <span class="Keyword">and</span> obj.substr))
+<span class="line-numbers"> 474 </span> 
+<span class="line-numbers"> 475 </span> 
+<span class="line-numbers"> 476 </span>   <span class="Comment"><span class="Comment">#</span> Is a given value a number?</span>
+<span class="line-numbers"> 477 </span>   <span class="FunctionName">_.isNumber</span><span class="Keyword">:</span>     <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> (obj <span class="Keyword">is</span> <span class="Keyword">+</span>obj) <span class="Keyword">or</span> toString.call(obj) <span class="Keyword">is</span> <span class="String"><span class="String">'</span>[object Number]<span class="String">'</span></span>
+<span class="line-numbers"> 478 </span> 
+<span class="line-numbers"> 479 </span> 
+<span class="line-numbers"> 480 </span>   <span class="Comment"><span class="Comment">#</span> Is a given value a Date?</span>
+<span class="line-numbers"> 481 </span>   <span class="FunctionName">_.isDate</span><span class="Keyword">:</span>       <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">and</span> obj.getTimezoneOffset <span class="Keyword">and</span> obj.setUTCFullYear)
+<span class="line-numbers"> 482 </span> 
+<span class="line-numbers"> 483 </span> 
+<span class="line-numbers"> 484 </span>   <span class="Comment"><span class="Comment">#</span> Is the given value a regular expression?</span>
+<span class="line-numbers"> 485 </span>   <span class="FunctionName">_.isRegExp</span><span class="Keyword">:</span>     <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> <span class="Keyword">!</span><span class="Keyword">!</span>(obj <span class="Keyword">and</span> obj.exec <span class="Keyword">and</span> (obj.ignoreCase <span class="Keyword">or</span> obj.ignoreCase <span class="Keyword">is</span> <span class="BuiltInConstant">false</span>))
+<span class="line-numbers"> 486 </span> 
+<span class="line-numbers"> 487 </span> 
+<span class="line-numbers"> 488 </span>   <span class="Comment"><span class="Comment">#</span> Is the given value NaN -- this one is interesting. NaN != NaN, and</span>
+<span class="line-numbers"> 489 </span>   <span class="Comment"><span class="Comment">#</span> isNaN(undefined) == true, so we make sure it's a number first.</span>
+<span class="line-numbers"> 490 </span>   <span class="FunctionName">_.isNaN</span><span class="Keyword">:</span>        <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> _.isNumber(obj) <span class="Keyword">and</span> window.isNaN(obj)
+<span class="line-numbers"> 491 </span> 
+<span class="line-numbers"> 492 </span> 
+<span class="line-numbers"> 493 </span>   <span class="Comment"><span class="Comment">#</span> Is a given value equal to null?</span>
+<span class="line-numbers"> 494 </span>   <span class="FunctionName">_.isNull</span><span class="Keyword">:</span>       <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> obj <span class="Keyword">is</span> <span class="BuiltInConstant">null</span>
+<span class="line-numbers"> 495 </span> 
+<span class="line-numbers"> 496 </span> 
+<span class="line-numbers"> 497 </span>   <span class="Comment"><span class="Comment">#</span> Is a given variable undefined?</span>
+<span class="line-numbers"> 498 </span>   <span class="FunctionName">_.isUndefined</span><span class="Keyword">:</span>  <span class="FunctionArgument">(</span><span class="FunctionArgument">obj</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> <span class="Keyword">typeof</span> obj <span class="Keyword">is</span> <span class="String"><span class="String">'</span>undefined<span class="String">'</span></span>
+<span class="line-numbers"> 499 </span> 
+<span class="line-numbers"> 500 </span> 
+<span class="line-numbers"> 501 </span>   <span class="Comment"><span class="Comment">#</span> -------------------------- Utility Functions: --------------------------</span>
+<span class="line-numbers"> 502 </span> 
+<span class="line-numbers"> 503 </span>   <span class="Comment"><span class="Comment">#</span> Run Underscore.js in noConflict mode, returning the '_' variable to its</span>
+<span class="line-numbers"> 504 </span>   <span class="Comment"><span class="Comment">#</span> previous owner. Returns a reference to the Underscore object.</span>
+<span class="line-numbers"> 505 </span>   <span class="FunctionName">_.noConflict</span><span class="Keyword">:</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 506 </span>     <span class="FunctionName">root._</span><span class="Keyword">:</span> previousUnderscore
+<span class="line-numbers"> 507 </span>     <span class="Variable">this</span>
+<span class="line-numbers"> 508 </span> 
+<span class="line-numbers"> 509 </span> 
+<span class="line-numbers"> 510 </span>   <span class="Comment"><span class="Comment">#</span> Keep the identity function around for default iterators.</span>
+<span class="line-numbers"> 511 </span>   <span class="FunctionName">_.identity</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">value</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span> value
+<span class="line-numbers"> 512 </span> 
+<span class="line-numbers"> 513 </span> 
+<span class="line-numbers"> 514 </span>   <span class="Comment"><span class="Comment">#</span> Break out of the middle of an iteration.</span>
+<span class="line-numbers"> 515 </span>   <span class="FunctionName">_.breakLoop</span><span class="Keyword">:</span> <span class="Storage">-&gt;</span> <span class="Keyword">throw</span> breaker
+<span class="line-numbers"> 516 </span> 
+<span class="line-numbers"> 517 </span> 
+<span class="line-numbers"> 518 </span>   <span class="Comment"><span class="Comment">#</span> Generate a unique integer id (unique within the entire client session).</span>
+<span class="line-numbers"> 519 </span>   <span class="Comment"><span class="Comment">#</span> Useful for temporary DOM ids.</span>
+<span class="line-numbers"> 520 </span>   <span class="FunctionName">idCounter</span><span class="Keyword">:</span> <span class="Number">0</span>
+<span class="line-numbers"> 521 </span>   <span class="FunctionName">_.uniqueId</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">prefix</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 522 </span>     (prefix <span class="Keyword">or</span> <span class="String"><span class="String">'</span><span class="String">'</span></span>) <span class="Keyword">+</span> idCounter<span class="Keyword">++</span>
+<span class="line-numbers"> 523 </span> 
+<span class="line-numbers"> 524 </span> 
+<span class="line-numbers"> 525 </span>   <span class="Comment"><span class="Comment">#</span> By default, Underscore uses ERB-style template delimiters, change the</span>
+<span class="line-numbers"> 526 </span>   <span class="Comment"><span class="Comment">#</span> following template settings to use alternative delimiters.</span>
+<span class="line-numbers"> 527 </span>   <span class="FunctionName">_.templateSettings</span><span class="Keyword">:</span> {
+<span class="line-numbers"> 528 </span>     <span class="FunctionName">start</span><span class="Keyword">:</span>        <span class="String"><span class="String">'</span>&lt;%<span class="String">'</span></span>
+<span class="line-numbers"> 529 </span>     <span class="FunctionName">end</span><span class="Keyword">:</span>          <span class="String"><span class="String">'</span>%&gt;<span class="String">'</span></span>
+<span class="line-numbers"> 530 </span>     <span class="FunctionName">interpolate</span><span class="Keyword">:</span><span class="String">  <span class="String">/</span>&lt;%=(.+?)%&gt;<span class="String">/</span>g</span>
+<span class="line-numbers"> 531 </span>   }
+<span class="line-numbers"> 532 </span> 
+<span class="line-numbers"> 533 </span> 
+<span class="line-numbers"> 534 </span>   <span class="Comment"><span class="Comment">#</span> JavaScript templating a-la ERB, pilfered from John Resig's</span>
+<span class="line-numbers"> 535 </span>   <span class="Comment"><span class="Comment">#</span> &quot;Secrets of the JavaScript Ninja&quot;, page 83.</span>
+<span class="line-numbers"> 536 </span>   <span class="Comment"><span class="Comment">#</span> Single-quote fix from Rick Strahl's version.</span>
+<span class="line-numbers"> 537 </span>   <span class="FunctionName">_.template</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">str, data</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 538 </span>     <span class="FunctionName">c</span><span class="Keyword">:</span> _.templateSettings
+<span class="line-numbers"> 539 </span>     <span class="FunctionName">fn</span><span class="Keyword">:</span> <span class="Keyword">new</span> <span class="TypeName">Function</span> <span class="String"><span class="String">'</span>obj<span class="String">'</span></span>,
+<span class="line-numbers"> 540 </span>       <span class="String"><span class="String">'</span>var p=[],print=function(){p.push.apply(p,arguments);};<span class="String">'</span></span> <span class="Keyword">+</span>
+<span class="line-numbers"> 541 </span>       <span class="String"><span class="String">'</span>with(obj){p.push(<span class="UserDefinedConstant">\'</span><span class="String">'</span></span> <span class="Keyword">+</span>
+<span class="line-numbers"> 542 </span>       str.replace(<span class="String"><span class="String">/</span>[<span class="UserDefinedConstant">\r</span><span class="UserDefinedConstant">\t</span><span class="UserDefinedConstant">\n</span>]<span class="String">/</span>g</span>, <span class="String"><span class="String">&quot;</span> <span class="String">&quot;</span></span>)
+<span class="line-numbers"> 543 </span>          .replace(<span class="Keyword">new</span> <span class="TypeName">RegExp</span>(<span class="String"><span class="String">&quot;</span>'(?=[^<span class="String">&quot;</span></span><span class="Keyword">+</span>c.end[<span class="Number">0</span>]<span class="Keyword">+</span><span class="String"><span class="String">&quot;</span>]*<span class="String">&quot;</span></span><span class="Keyword">+</span>c.end<span class="Keyword">+</span><span class="String"><span class="String">&quot;</span>)<span class="String">&quot;</span></span>,<span class="String"><span class="String">&quot;</span>g<span class="String">&quot;</span></span>),<span class="String"><span class="String">&quot;</span><span class="UserDefinedConstant">\t</span><span class="String">&quot;</span></span>)
+<span class="line-numbers"> 544 </span>          .split(<span class="String"><span class="String">&quot;</span>'<span class="String">&quot;</span></span>).join(<span class="String"><span class="String">&quot;</span><span class="UserDefinedConstant">\\</span>'<span class="String">&quot;</span></span>)
+<span class="line-numbers"> 545 </span>          .split(<span class="String"><span class="String">&quot;</span><span class="UserDefinedConstant">\t</span><span class="String">&quot;</span></span>).join(<span class="String"><span class="String">&quot;</span>'<span class="String">&quot;</span></span>)
+<span class="line-numbers"> 546 </span>          .replace(c.interpolate, <span class="String"><span class="String">&quot;</span>',$1,'<span class="String">&quot;</span></span>)
+<span class="line-numbers"> 547 </span>          .split(c.start).join(<span class="String"><span class="String">&quot;</span>');<span class="String">&quot;</span></span>)
+<span class="line-numbers"> 548 </span>          .split(c.end).join(<span class="String"><span class="String">&quot;</span>p.push('<span class="String">&quot;</span></span>) <span class="Keyword">+</span>
+<span class="line-numbers"> 549 </span>          <span class="String"><span class="String">&quot;</span>');}return p.join('');<span class="String">&quot;</span></span>
+<span class="line-numbers"> 550 </span>     <span class="Keyword">if</span> data <span class="Keyword">then</span> fn(data) <span class="Keyword">else</span> fn
+<span class="line-numbers"> 551 </span> 
+<span class="line-numbers"> 552 </span> 
+<span class="line-numbers"> 553 </span>   <span class="Comment"><span class="Comment">#</span> ------------------------------- Aliases ----------------------------------</span>
+<span class="line-numbers"> 554 </span> 
+<span class="line-numbers"> 555 </span>   <span class="FunctionName">_.forEach</span><span class="Keyword">:</span> _.each
+<span class="line-numbers"> 556 </span>   <span class="FunctionName">_.foldl</span><span class="Keyword">:</span>   <span class="FunctionName">_.inject</span><span class="Keyword">:</span>      _.reduce
+<span class="line-numbers"> 557 </span>   <span class="FunctionName">_.foldr</span><span class="Keyword">:</span>   _.reduceRight
+<span class="line-numbers"> 558 </span>   <span class="FunctionName">_.filter</span><span class="Keyword">:</span>  _.select
+<span class="line-numbers"> 559 </span>   <span class="FunctionName">_.every</span><span class="Keyword">:</span>   _.all
+<span class="line-numbers"> 560 </span>   <span class="FunctionName">_.some</span><span class="Keyword">:</span>    _.any
+<span class="line-numbers"> 561 </span>   <span class="FunctionName">_.head</span><span class="Keyword">:</span>    _.first
+<span class="line-numbers"> 562 </span>   <span class="FunctionName">_.tail</span><span class="Keyword">:</span>    _.rest
+<span class="line-numbers"> 563 </span>   <span class="FunctionName">_.methods</span><span class="Keyword">:</span> _.functions
+<span class="line-numbers"> 564 </span> 
+<span class="line-numbers"> 565 </span> 
+<span class="line-numbers"> 566 </span>   <span class="Comment"><span class="Comment">#</span> ------------------------ Setup the OOP Wrapper: --------------------------</span>
+<span class="line-numbers"> 567 </span> 
+<span class="line-numbers"> 568 </span>   <span class="Comment"><span class="Comment">#</span> Helper function to continue chaining intermediate results.</span>
+<span class="line-numbers"> 569 </span>   <span class="FunctionName">result</span><span class="Keyword">:</span> <span class="FunctionArgument">(</span><span class="FunctionArgument">obj, chain</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 570 </span>     <span class="Keyword">if</span> chain <span class="Keyword">then</span> _(obj).chain() <span class="Keyword">else</span> obj
+<span class="line-numbers"> 571 </span> 
+<span class="line-numbers"> 572 </span> 
+<span class="line-numbers"> 573 </span>   <span class="Comment"><span class="Comment">#</span> Add all of the Underscore functions to the wrapper object.</span>
+<span class="line-numbers"> 574 </span>   _.each _.functions(_), <span class="FunctionArgument">(</span><span class="FunctionArgument">name</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 575 </span>     <span class="FunctionName">method</span><span class="Keyword">:</span> _[name]
+<span class="line-numbers"> 576 </span>     wrapper.prototype[name]<span class="Keyword">:</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 577 </span>       unshift.call(arguments, <span class="Variable">this</span>._wrapped)
+<span class="line-numbers"> 578 </span>       result(method.apply(_, arguments), <span class="Variable">this</span>._chain)
+<span class="line-numbers"> 579 </span> 
+<span class="line-numbers"> 580 </span> 
+<span class="line-numbers"> 581 </span>   <span class="Comment"><span class="Comment">#</span> Add all mutator Array functions to the wrapper.</span>
+<span class="line-numbers"> 582 </span>   _.each [<span class="String"><span class="String">'</span>pop<span class="String">'</span></span>, <span class="String"><span class="String">'</span>push<span class="String">'</span></span>, <span class="String"><span class="String">'</span>reverse<span class="String">'</span></span>, <span class="String"><span class="String">'</span>shift<span class="String">'</span></span>, <span class="String"><span class="String">'</span>sort<span class="String">'</span></span>, <span class="String"><span class="String">'</span>splice<span class="String">'</span></span>, <span class="String"><span class="String">'</span>unshift<span class="String">'</span></span>], <span class="FunctionArgument">(</span><span class="FunctionArgument">name</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 583 </span>     <span class="FunctionName">method</span><span class="Keyword">:</span> Array.prototype[name]
+<span class="line-numbers"> 584 </span>     wrapper.prototype[name]<span class="Keyword">:</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 585 </span>       method.apply(<span class="Variable">this</span>._wrapped, arguments)
+<span class="line-numbers"> 586 </span>       result(<span class="Variable">this</span>._wrapped, <span class="Variable">this</span>._chain)
+<span class="line-numbers"> 587 </span> 
+<span class="line-numbers"> 588 </span> 
+<span class="line-numbers"> 589 </span>   <span class="Comment"><span class="Comment">#</span> Add all accessor Array functions to the wrapper.</span>
+<span class="line-numbers"> 590 </span>   _.each [<span class="String"><span class="String">'</span>concat<span class="String">'</span></span>, <span class="String"><span class="String">'</span>join<span class="String">'</span></span>, <span class="String"><span class="String">'</span>slice<span class="String">'</span></span>], <span class="FunctionArgument">(</span><span class="FunctionArgument">name</span><span class="FunctionArgument">)</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 591 </span>     <span class="FunctionName">method</span><span class="Keyword">:</span> Array.prototype[name]
+<span class="line-numbers"> 592 </span>     wrapper.prototype[name]<span class="Keyword">:</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 593 </span>       result(method.apply(<span class="Variable">this</span>._wrapped, arguments), <span class="Variable">this</span>._chain)
+<span class="line-numbers"> 594 </span> 
+<span class="line-numbers"> 595 </span> 
+<span class="line-numbers"> 596 </span>   <span class="Comment"><span class="Comment">#</span> Start chaining a wrapped Underscore object.</span>
+<span class="line-numbers"> 597 </span>   <span class="FunctionName">wrapper::chain</span><span class="Keyword">:</span> <span class="Storage">-&gt;</span>
+<span class="line-numbers"> 598 </span>     <span class="FunctionName">this._chain</span><span class="Keyword">:</span> <span class="BuiltInConstant">true</span>
+<span class="line-numbers"> 599 </span>     <span class="Variable">this</span>
+<span class="line-numbers"> 600 </span> 
+<span class="line-numbers"> 601 </span> 
+<span class="line-numbers"> 602 </span>   <span class="Comment"><span class="Comment">#</span> Extracts the result from a wrapped and chained object.</span>
+<span class="line-numbers"> 603 </span>   <span class="FunctionName">wrapper::value</span><span class="Keyword">:</span> <span class="Storage">-&gt;</span> <span class="Variable">this</span>._wrapped
+</pre>  <p>
+    <a href="http://validator.w3.org/check?uri=referer">
+      <img style="border:0"
+           src="http://www.w3.org/Icons/valid-xhtml10"
+           alt="Valid XHTML 1.0 Strict" height="31" width="88" />
+    </a>
+    <a href="http://jigsaw.w3.org/css-validator/check?uri=referer">
+      <img style="border:0;width:88px;height:31px"
+           src="http://jigsaw.w3.org/css-validator/images/vcss" 
+           alt="Valid CSS!" />
+    </a>
+  </p>
+</body>
+</html>

documents.cs

@@ -1,72 +0,0 @@
-# Document Model
-dc.model.Document: dc.Model.extend({
-
-  constructor: attributes => this.base(attributes).
-
-  # For display, show either the highlighted search results, or the summary,
-  # if no highlights are available.
-  # The import process will take care of this in the future, but the inline
-  # version of the summary has all runs of whitespace squeezed out.
-  displaySummary: =>
-    text: this.get('highlight') or this.get('summary') or ''
-    text and text.replace(/\s+/g, ' ').
-
-  # Return a list of the document's metadata. Think about caching this on the
-  # document by binding to Metadata, instead of on-the-fly.
-  metadata: =>
-    docId: this.id
-    _.select(Metadata.models()
-      meta => _.any(meta.get('instances')
-        instance => instance.document_id is docId.).).
-
-  bookmark: pageNumber =>
-    bookmark: new dc.model.Bookmark({title: this.get('title'), page_number: pageNumber, document_id: this.id})
-    Bookmarks.create(bookmark).
-
-  # Inspect.
-  toString: => 'Document ' + this.id + ' "' + this.get('title') + '"'.
-
-})
-
-# Document Set
-dc.model.DocumentSet: dc.model.RESTfulSet.extend({
-
-  resource: 'documents'
-
-  SELECTION_CHANGED: 'documents:selection_changed'
-
-  constructor: options =>
-    this.base(options)
-    _.bindAll(this, 'downloadSelectedViewers', 'downloadSelectedPDF', 'downloadSelectedFullText').
-
-  selected: => _.select(this.models(), m => m.get('selected').).
-
-  selectedIds: => _.pluck(this.selected(), 'id').
-
-  countSelected: => this.selected().length.
-
-  downloadSelectedViewers: =>
-    dc.app.download('/download/' + this.selectedIds().join('/') + '/document_viewer.zip').
-
-  downloadSelectedPDF: =>
-    if this.countSelected() <= 1 then return window.open(this.selected()[0].get('pdf_url')).
-    dc.app.download('/download/' + this.selectedIds().join('/') + '/document_pdfs.zip').
-
-  downloadSelectedFullText: =>
-    if this.countSelected() <= 1 then return window.open(this.selected()[0].get('full_text_url')).
-    dc.app.download('/download/' + this.selectedIds().join('/') + '/document_text.zip').
-
-  # We override "_onModelEvent" to fire selection changed events when documents
-  # change their selected state.
-  _onModelEvent: e, model =>
-    this.base(e, model)
-    fire: e == dc.Model.CHANGED and model.hasChanged('selected')
-    if fire then _.defer(_(this.fire).bind(this, this.SELECTION_CHANGED, this))..
-
-})
-
-# The main set of Documents, used by the search tab.
-window.Documents: new dc.model.DocumentSet()
-
-# The set of documents that is used to look at a particular label.
-dc.app.LabeledDocuments: new dc.model.DocumentSet()

examples/beautiful_code/binary_search.coffee

@@ -0,0 +1,16 @@
+# Beautiful Code, Chapter 6.
+# The implementation of binary search that is tested.
+
+# Return the index of an element in a sorted list. (or -1, if not present)
+index: (list, target) ->
+  [low, high]: [0, list.length]
+  while low < high
+    mid: (low + high) >> 1
+    val: list[mid]
+    return mid if val is target
+    if val < target then low: mid + 1 else high: mid
+  return -1
+
+puts 2 is index([10, 20, 30, 40, 50], 30)
+puts 4 is index([-97, 35, 67, 88, 1200], 1200)
+puts 0 is index([0, 45, 70], 0)

examples/beautiful_code/quicksort_runtime.coffee

@@ -0,0 +1,13 @@
+# Beautiful Code, Chapter 3.
+# Produces the expected runtime of Quicksort, for every integer from 1 to N.
+
+runtime: (N) ->
+  [sum, t]: [0, 0]
+  for n in [1..N]
+    sum += 2 * t
+    t: n - 1 + sum / n
+  t
+
+puts runtime(3) is 2.6666666666666665
+puts runtime(5) is 7.4
+puts runtime(8) is 16.92142857142857

examples/beautiful_code/regular_expression_matcher.coffee

@@ -0,0 +1,34 @@
+# Beautiful Code, Chapter 1.
+# Implements a regular expression matcher that supports character matches,
+# '.', '^', '$', and '*'.
+
+# Search for the regexp anywhere in the text.
+match: (regexp, text) ->
+  return match_here(regexp.slice(1), text) if regexp[0] is '^'
+  while text
+    return true if match_here(regexp, text)
+    text: text.slice(1)
+  false
+
+# Search for the regexp at the beginning of the text.
+match_here: (regexp, text) ->
+  [cur, next]: [regexp[0], regexp[1]]
+  if regexp.length is 0 then return true
+  if next is '*' then return match_star(cur, regexp.slice(2), text)
+  if cur is '$' and not next then return text.length is 0
+  if text and (cur is '.' or cur is text[0]) then return match_here(regexp.slice(1), text.slice(1))
+  false
+
+# Search for a kleene star match at the beginning of the text.
+match_star: (c, regexp, text) ->
+  while true
+    return true if match_here(regexp, text)
+    return false unless text and (text[0] is c or c is '.')
+    text: text.slice(1)
+
+puts match("ex", "some text")
+puts match("s..t", "spit")
+puts match("^..t", "buttercup")
+puts match("i..$", "cherries")
+puts match("o*m", "vrooooommm!")
+puts match("^hel*o$", "hellllllo")

examples/blocks.coffee

@@ -0,0 +1,57 @@
+# After wycats' http://yehudakatz.com/2010/02/07/the-building-blocks-of-ruby/
+
+# Sinatra.
+get '/hello', ->
+  'Hello World'
+
+
+# Append.
+append: (location, data) ->
+  path: new Pathname location
+  throw new Error("Location does not exist") unless path.exists()
+
+  File.open path, 'a', (file) ->
+    file.puts YAML.dump data
+
+  data
+
+
+# Rubinius' File.open implementation.
+File.open: (path, mode, block) ->
+  io: new File path, mode
+
+  return io unless block
+
+  try
+    block io
+  finally
+    try
+      io.close() unless io.closed()
+    catch error
+      # nothing, just swallow them.
+
+
+# Write.
+write: (location, data) ->
+  path = new Pathname location
+  raise "Location does not exist" unless path.exists()
+
+  File.open path, 'w', (file) ->
+    return false if Digest.MD5.hexdigest(file.read()) is data.hash()
+    file.puts YAML.dump data
+    true
+
+
+# Rails' respond_to.
+index: ->
+  people: Person.find 'all'
+
+  respond_to (format) ->
+    format.html()
+    format.xml -> render { xml: people.xml() }
+
+
+# Synchronization.
+synchronize: (block) ->
+  lock()
+  try block() finally unlock()

examples/code.coffee

@@ -0,0 +1,173 @@
+# Functions:
+square: (x) -> x * x
+
+sum: (x, y) -> x + y
+
+odd: (x) -> x % 2 isnt 0
+
+even: (x) -> x % 2 is 0
+
+run_loop: ->
+  fire_events((e) -> e.stopPropagation())
+  listen()
+  wait()
+
+# Objects:
+dense_object_literal: {one: 1, two: 2, three: 3}
+
+spaced_out_multiline_object: {
+  pi: 3.14159
+  list: [1, 2, 3, 4]
+  regex: /match[ing](every|thing|\/)/gi
+  three: new Idea()
+
+  inner_obj: {
+    freedom: -> _.freedom()
+  }
+}
+
+# Arrays:
+stooges: [{moe: 45}, {curly: 43}, {larry: 46}]
+
+exponents: [(x) -> x, (x) -> x * x, (x) -> x * x * x]
+
+empty: []
+
+multiline: [
+  'line one'
+  'line two'
+]
+
+# Conditionals and ternaries.
+if submarine.shields_up
+  full_speed_ahead()
+  fire_torpedos()
+else if submarine.sinking
+  abandon_ship()
+else
+  run_away()
+
+eldest: if 25 > 21 then liz else marge
+
+decoration: medal_of_honor if war_hero
+
+go_to_sleep() unless coffee
+
+# Returning early:
+race: ->
+  run()
+  walk()
+  crawl()
+  if tired then return sleep()
+  race()
+
+# Conditional assignment:
+good ||= evil
+wine &&= cheese
+
+# Nested property access and calls.
+((moon.turn(360))).shapes[3].move({x: 45, y: 30}).position['top'].offset('x')
+
+a: b: c: 5
+
+# Embedded JavaScript.
+callback(
+  `function(e) { e.stop(); }`
+)
+
+# Try/Catch/Finally/Throw.
+try
+  all_hell_breaks_loose()
+  dogs_and_cats_living_together()
+  throw "up"
+catch error
+  print(error)
+finally
+  clean_up()
+
+try all_hell_breaks_loose() catch error then print(error) finally clean_up()
+
+# While loops, break and continue.
+while demand > supply
+  sell()
+  restock()
+
+while supply > demand then buy()
+
+while true
+  break if broken
+  continue if continuing
+
+# Unary operators.
+!!true
+
+# Lexical scoping.
+v_1: 5
+change_a_and_set_b: ->
+  v_1: 10
+  v_2: 15
+v_2: 20
+
+# Array comprehensions.
+supper: food.capitalize() for food in ['toast', 'cheese', 'wine']
+
+drink(bottle) for bottle, i in ['soda', 'wine', 'lemonade'] when even(i)
+
+# Switch statements ("else" serves as a default).
+activity: switch day
+  when "Tuesday"   then eat_breakfast()
+  when "Sunday"    then go_to_church()
+  when "Saturday"  then go_to_the_park()
+  when "Wednesday"
+    if day is bingo_day
+      go_to_bingo()
+    else
+      eat_breakfast()
+      go_to_work()
+      eat_dinner()
+  else go_to_work()
+
+# Semicolons can optionally be used instead of newlines.
+wednesday: -> eat_breakfast(); go_to_work(); eat_dinner()
+
+# Array slice literals.
+zero_to_nine: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+three_to_six: zero_to_nine[3..6]
+
+# Multiline strings with inner quotes.
+story: "Lorem ipsum dolor \"sit\" amet, consectetuer adipiscing elit,
+sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna
+aliquam erat volutpat. Ut wisi enim ad."
+
+# Inheritance and calling super.
+Animal: ->
+Animal::move: (meters) ->
+  alert(this.name + " moved " + meters + "m.")
+
+Snake: (name) -> this.name: name
+Snake extends Animal
+Snake::move: ->
+  alert('Slithering...')
+  super(5)
+
+Horse: (name) -> this.name: name
+Horse extends Animal
+Horse::move: ->
+  alert('Galloping...')
+  super(45)
+
+sam: new Snake("Sammy the Snake")
+tom: new Horse("Tommy the Horse")
+
+sam.move()
+tom.move()
+
+# Numbers.
+a_googol:   1e100
+hex:        0xff0000
+negative:   -1.0
+infinity:   Infinity
+nan:        NaN
+
+# Deleting.
+delete secret.identity

examples/computer_science/README

@@ -0,0 +1,4 @@
+Ported from Nicholas Zakas' collection of computer science fundamentals, written
+in JavaScript. Originals available here:
+
+http://github.com/nzakas/computer-science-in-javascript

examples/computer_science/binary_search.coffee

@@ -0,0 +1,25 @@
+# Uses a binary search algorithm to locate a value in the specified array.
+binary_search: (items, value) ->
+
+  start: 0
+  stop:  items.length - 1
+  pivot: Math.floor((start + stop) / 2)
+
+  while items[pivot] isnt value and start < stop
+
+    # Adjust the search area.
+    stop:   pivot - 1 if value < items[pivot]
+    start:  pivot + 1 if value > items[pivot]
+
+    # Recalculate the pivot.
+    pivot: Math.floor((stop + start) / 2)
+
+  # Make sure we've found the correct value.
+  if items[pivot] is value then pivot else -1
+
+
+# Test the function.
+puts(2 is binary_search([10, 20, 30, 40, 50], 30))
+puts(4 is binary_search([-97, 35, 67, 88, 1200], 1200))
+puts(0 is binary_search([0, 45, 70], 0))
+puts(-1 is binary_search([0, 45, 70], 10))

examples/computer_science/bubble_sort.coffee

@@ -0,0 +1,11 @@
+# A bubble sort implementation, sorting the given array in-place.
+bubble_sort: (list) ->
+  for i in [0...list.length]
+    for j in [0...list.length - i]
+      [list[j], list[j+1]]: [list[j+1], list[j]] if list[j] > list[j+1]
+  list
+
+
+# Test the function.
+puts(bubble_sort([3, 2, 1]).join(' ') is '1 2 3')
+puts(bubble_sort([9, 2, 7, 0, 1]).join(' ') is '0 1 2 7 9')

examples/computer_science/linked_list.coffee

@@ -0,0 +1,106 @@
+# "Classic" linked list implementation that doesn't keep track of its size.
+LinkedList: ->
+  this._head: null # Pointer to the first item in the list.
+
+
+# Appends some data to the end of the list. This method traverses the existing
+# list and places the value at the end in a new node.
+LinkedList::add: (data) ->
+
+  # Create a new node object to wrap the data.
+  node: {data: data, next: null}
+
+  current: this._head ||= node
+
+  if this._head isnt node
+    current: current.next while current.next
+    current.next: node
+
+  this
+
+
+# Retrieves the data at the given position in the list.
+LinkedList::item: (index) ->
+
+  # Check for out-of-bounds values.
+  return null if index < 0
+
+  current: this._head or null
+  i: -1
+
+  # Advance through the list.
+  current: current.next while current and index > (i += 1)
+
+  # Return null if we've reached the end.
+  current and current.data
+
+
+# Remove the item from the given location in the list.
+LinkedList::remove: (index) ->
+
+  # Check for out-of-bounds values.
+  return null if index < 0
+
+  current: this._head or null
+  i: -1
+
+  # Special case: removing the first item.
+  if index is 0
+    this._head: current.next
+  else
+
+    # Find the right location.
+    [previous, current]: [current, current.next] while index > (i += 1)
+
+    # Skip over the item to remove.
+    previous.next: current.next
+
+  # Return the value.
+  current and current.data
+
+
+# Calculate the number of items in the list.
+LinkedList::size: ->
+  current: this._head
+  count:   0
+
+  while current
+    count += 1
+    current: current.next
+
+  count
+
+
+# Convert the list into an array.
+LinkedList::toArray: ->
+  result:   []
+  current:  this._head
+
+  while current
+    result.push(current.data)
+    current: current.next
+
+  result
+
+
+# The string representation of the linked list.
+LinkedList::toString: -> this.toArray().toString()
+
+
+# Tests.
+list: new LinkedList()
+
+list.add("Hi")
+puts(list.size()  is 1)
+puts(list.item(0) is "Hi")
+puts(list.item(1) is null)
+
+list: new LinkedList()
+list.add("zero").add("one").add("two")
+puts(list.size()     is 3)
+puts(list.item(2)    is "two")
+puts(list.remove(1)  is "one")
+puts(list.item(0)    is "zero")
+puts(list.item(1)    is "two")
+puts(list.size()     is 2)
+puts(list.item(-10)  is null)

examples/computer_science/luhn_algorithm.coffee

@@ -0,0 +1,36 @@
+# Use the Luhn algorithm to validate a numeric identifier, such as credit card
+# numbers, national insurance numbers, etc.
+# See: http://en.wikipedia.org/wiki/Luhn_algorithm
+
+is_valid_identifier: (identifier) ->
+
+  sum: 0
+  alt: false
+
+  for i in [(identifier.length - 1)..0]
+
+    # Get the next digit.
+    num: parseInt(identifier.charAt(i), 10)
+
+    # If it's not a valid number, abort.
+    return false if isNaN(num)
+
+    # If it's an alternate number...
+    if alt
+      num *= 2
+      num: (num % 10) + 1 if num > 9
+
+    # Flip the alternate bit.
+    alt: !alt
+
+    # Add to the rest of the sum.
+    sum += num
+
+  # Determine if it's valid.
+  sum % 10 is 0
+
+
+# Tests.
+puts(is_valid_identifier("49927398716")      is true)
+puts(is_valid_identifier("4408041234567893") is true)
+puts(is_valid_identifier("4408041234567890") is false)

examples/computer_science/merge_sort.coffee

@@ -0,0 +1,19 @@
+# Sorts an array in ascending natural order using merge sort.
+merge_sort: (list) ->
+
+  return list if list.length is 1
+
+  result: []
+  pivot: Math.floor(list.length / 2)
+  left:  merge_sort(list.slice(0, pivot))
+  right: merge_sort(list.slice(pivot))
+
+  while left.length and right.length
+    result.push(if left[0] < right[0] then left.shift() else right.shift())
+
+  result.concat(left).concat(right)
+
+
+# Test the function.
+puts(merge_sort([3, 2, 1]).join(' ') is '1 2 3')
+puts(merge_sort([9, 2, 7, 0, 1]).join(' ') is '0 1 2 7 9')

examples/computer_science/selection_sort.coffee

@@ -0,0 +1,23 @@
+# An in-place selection sort.
+selection_sort: (list) ->
+  len: list.length
+
+  # For each item in the list.
+  for i in [0...len]
+
+    # Set the minimum to this position.
+    min: i
+
+    # Check the rest of the array to see if anything is smaller.
+    (min: j if list[j] < list[min]) for j in [(i+1)...len]
+
+    # Swap if a smaller item has been found.
+    [list[i], list[min]]: [list[min], list[i]] if i isnt min
+
+  # The list is now sorted.
+  list
+
+
+# Test the function.
+puts(selection_sort([3, 2, 1]).join(' ') is '1 2 3')
+puts(selection_sort([9, 2, 7, 0, 1]).join(' ') is '0 1 2 7 9')

examples/poignant.coffee

@@ -0,0 +1,186 @@
+# Examples from the Poignant Guide.
+
+# ['toast', 'cheese', 'wine'].each { |food| print food.capitalize }
+
+['toast', 'wine', 'cheese'].each (food) -> print(food.capitalize())
+
+
+
+# class LotteryTicket
+#   def picks;           @picks;            end
+#   def picks=(var);     @picks = var;      end
+#   def purchased;       @purchased;        end
+#   def purchased=(var); @purchased = var;  end
+# end
+
+LotteryTicket: {
+  get_picks:          -> this.picks
+  set_picks:      (nums) -> this.picks: nums
+  get_purchase:       -> this.purchase
+  set_purchase: (amount) -> this.purchase: amount
+}
+
+
+
+# class << LotteryDraw
+#   def play
+#     result = LotteryTicket.new_random
+#     winners = {}
+#     @@tickets.each do |buyer, ticket_list|
+#       ticket_list.each do |ticket|
+#         score = ticket.score( result )
+#         next if score.zero?
+#         winners[buyer] ||= []
+#         winners[buyer] << [ ticket, score ]
+#       end
+#     end
+#     @@tickets.clear
+#     winners
+#   end
+# end
+
+LotteryDraw: {
+  play: ->
+    result:   LotteryTicket.new_random()
+    winners:  {}
+    this.tickets.each (buyer, ticket_list) ->
+      ticket_list.each (ticket) ->
+        score: ticket.score(result)
+        return if score is 0
+        winners[buyer] ||= []
+        winners[buyer].push([ticket, score])
+    this.tickets: {}
+    winners
+}
+
+
+
+# module WishScanner
+#   def scan_for_a_wish
+#     wish = self.read.detect do |thought|
+#       thought.index( 'wish: ' ) == 0
+#     end
+#     wish.gsub( 'wish: ', '' )
+#   end
+# end
+
+WishScanner: {
+  scan_for_a_wish: ->
+    wish: this.read().detect((thought) -> thought.index('wish: ') is 0)
+    wish.replace('wish: ', '')
+}
+
+
+
+# class Creature
+#
+#   # This method applies a hit taken during a fight.
+#   def hit( damage )
+#     p_up = rand( charisma )
+#     if p_up % 9 == 7
+#       @life += p_up / 4
+#       puts "[#{ self.class } magick powers up #{ p_up }!]"
+#     end
+#     @life -= damage
+#     puts "[#{ self.class } has died.]" if @life <= 0
+#   end
+#
+#   # This method takes one turn in a fight.
+#   def fight( enemy, weapon )
+#     if life <= 0
+#       puts "[#{ self.class } is too dead to fight!]"
+#       return
+#     end
+#
+#     # Attack the opponent
+#     your_hit = rand( strength + weapon )
+#     puts "[You hit with #{ your_hit } points of damage!]"
+#     enemy.hit( your_hit )
+#
+#     # Retaliation
+#     p enemy
+#     if enemy.life > 0
+#       enemy_hit = rand( enemy.strength + enemy.weapon )
+#       puts "[Your enemy hit with #{ enemy_hit } points of damage!]"
+#       self.hit( enemy_hit )
+#     end
+#   end
+#
+# end
+
+Creature : {
+
+  # This method applies a hit taken during a fight.
+  hit: (damage) ->
+    p_up: Math.rand(this.charisma)
+    if p_up % 9 is 7
+      this.life += p_up / 4
+      puts("[" + this.name + " magick powers up " + p_up + "!]")
+    this.life -= damage
+    if this.life <= 0 then puts("[" + this.name + " has died.]")
+
+  # This method takes one turn in a fight.
+  fight: (enemy, weapon) ->
+    if this.life <= 0 then return puts("[" + this.name + "is too dead to fight!]")
+
+    # Attack the opponent.
+    your_hit: Math.rand(this.strength + weapon)
+    puts("[You hit with " + your_hit + "points of damage!]")
+    enemy.hit(your_hit)
+
+    # Retaliation.
+    puts(enemy)
+    if enemy.life > 0
+      enemy_hit: Math.rand(enemy.strength + enemy.weapon)
+      puts("[Your enemy hit with " + enemy_hit + "points of damage!]")
+      this.hit(enemy_hit)
+
+}
+
+
+
+# # Get evil idea and swap in code words
+# print "Enter your new idea: "
+# idea = gets
+# code_words.each do |real, code|
+#   idea.gsub!( real, code )
+# end
+#
+# # Save the jibberish to a new file
+# print "File encoded.  Please enter a name for this idea: "
+# idea_name = gets.strip
+# File::open( "idea-" + idea_name + ".txt", "w" ) do |f|
+#   f << idea
+# end
+
+# Get evil idea and swap in code words
+print("Enter your new idea: ")
+idea: gets()
+code_words.each((real, code) -> idea.replace(real, code))
+
+# Save the jibberish to a new file
+print("File encoded. Please enter a name for this idea: ")
+idea_name: gets().strip()
+File.open("idea-" + idea_name + '.txt', 'w', (file) -> file.write(idea))
+
+
+
+# def wipe_mutterings_from( sentence )
+#   unless sentence.respond_to? :include?
+#     raise ArgumentError,
+#       "cannot wipe mutterings from a #{ sentence.class }"
+#   end
+#   while sentence.include? '('
+#     open = sentence.index( '(' )
+#     close = sentence.index( ')', open )
+#     sentence[open..close] = '' if close
+#   end
+# end
+
+wipe_mutterings_from: (sentence) ->
+  throw new Error("cannot wipe mutterings") unless sentence.indexOf
+  while sentence.indexOf('(') >= 0
+    open:     sentence.indexOf('(') - 1
+    close:    sentence.indexOf(')') + 1
+    sentence: sentence[0..open] + sentence[close..sentence.length]
+    sentence

examples/potion.coffee

@@ -0,0 +1,205 @@
+# Examples from _why's Potion, the Readme and "Potion: A Short Pamphlet".
+
+# 5 times: "Odelay!" print.
+
+print("Odelay!") for i in [1..5]
+
+
+# add = (x, y): x + y.
+# add(2, 4) string print
+
+add: (x, y) -> x + y
+print(add(2, 4))
+
+
+# loop: 'quaff' print.
+
+while true
+  print('quaff')
+
+
+# ('cheese', 'bread', 'mayo') at (1) print
+
+print(['cheese', 'bread', 'mayo'][1])
+
+
+# (language='Potion', pointless=true) at (key='language') print
+
+print({language: 'Potion', pointless: true}['language'])
+
+
+# minus = (x, y): x - y.
+# minus (y=10, x=6)
+
+minus: (x, y) -> x - y
+minus(6, 10)
+
+
+# foods = ('cheese', 'bread', 'mayo')
+# foods (2)
+
+foods: ['cheese', 'bread', 'mayo']
+foods[2]
+
+
+# (dog='canine', cat='feline', fox='vulpine') each (key, val):
+#   (key, ' is a ', val) join print.
+
+for key, val of {dog: 'canine', cat: 'feline', fox: 'vulpine'}
+  print(key + ' is a ' + val)
+
+
+# Person = class: /name, /age, /sex.
+# Person print = ():
+#   ('My name is ', /name, '.') join print.
+
+Person: ->
+Person::print: ->
+  print('My name is ' + this.name + '.')
+
+
+# p = Person ()
+# p /name string print
+
+p: new Person()
+print(p.name)
+
+
+# Policeman = Person class (rank): /rank = rank.
+# Policeman print = ():
+#   ('My name is ', /name, ' and I'm a ', /rank, '.') join print.
+#
+# Policeman ('Constable') print
+
+Policeman: (rank) -> this.rank: rank
+Policeman extends Person
+Policeman::print: ->
+  print('My name is ' + this.name + " and I'm a " + this.rank + '.')
+
+print(new Policeman('Constable'))
+
+
+# app = [window (width=200, height=400)
+#         [para 'Welcome.', button 'OK']]
+# app first name
+
+app = {
+  window:  {width: 200, height: 200}
+  para:    'Welcome.'
+  button:  'OK'
+}
+app.window
+
+
+# x = 1
+# y = 2
+#
+# x = 1, y = 2
+
+x: 1
+y: 2
+
+x: 1; y: 2
+
+
+# table = (language='Potion'
+#           pointless=true)
+
+table: {
+  language: 'Potion'
+  pointless: yes
+}
+
+
+# # this foul business...
+# String length = (): 10.
+
+# this foul business...
+String::length: -> 10
+
+
+# block = :
+#   'potion' print.
+
+block: ->
+  print('potion')
+
+
+# if (age > 100): 'ancient'.
+
+if age > 100 then 'ancient'
+
+
+# author =
+#   if (title == 'Jonathan Strange & Mr. Norrell'):
+#     'Susanna Clarke'.
+#   elsif (title == 'The Star Diaries'):
+#     'Stanislaw Lem'.
+#   elsif (title == 'The Slynx'):
+#     'Tatyana Tolstaya'.
+#   else:
+#     '... probably Philip K. Dick'.
+
+switch author
+  when 'Jonathan Strange & Mr. Norrell'
+    'Susanna Clarke'
+  when 'The Star Diaries'
+    'Stanislaw Lem'
+  when 'The Slynx'
+    'Tatyana Tolstaya'
+  else
+    '... probably Philip K. Dick'
+
+
+# count = 8
+# while (count > 0):
+#   'quaff' print
+#   count--.
+
+count: 8
+while count > 0
+  print('quaff')
+  count--
+
+
+# 1 to 5 (a):
+#   a string print.
+
+print(a) for a in [1..5]
+
+
+# if (3 ?gender):
+#   "Huh? Numbers are sexed? That's amazing." print.
+
+if (3).gender?
+  print("Huh? Numbers are sexed? That's amazing.")
+
+
+# HomePage get = (url):
+#   session = url query ? at ('session').
+
+HomePage::get: (url) ->
+  session: url.query.session if url.query?
+
+
+# BTree = class: /left, /right.
+# b = BTree ()
+# b /left = BTree ()
+# b /right = BTree ()
+
+BTree:    ->
+b:        new BTree()
+b.left:   new BTree()
+b.right:  new BTree()
+
+
+# BTree = class: /left, /right.
+# b = BTree ()
+#
+# if (b ? /left):
+#   'left path found!' print.
+
+BTree: ->
+b: new BTree()
+
+print('left path found!') if b.left?

examples/underscore.coffee

@@ -0,0 +1,603 @@
+
+  # Underscore.coffee
+  # (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+  # Underscore is freely distributable under the terms of the MIT license.
+  # Portions of Underscore are inspired by or borrowed from Prototype.js,
+  # Oliver Steele's Functional, and John Resig's Micro-Templating.
+  # For all details and documentation:
+  # http://documentcloud.github.com/underscore/
+
+
+  # ------------------------- Baseline setup ---------------------------------
+
+  # Establish the root object, "window" in the browser, or "global" on the server.
+  root: this
+
+
+  # Save the previous value of the "_" variable.
+  previousUnderscore: root._
+
+
+  # If Underscore is called as a function, it returns a wrapped object that
+  # can be used OO-style. This wrapper holds altered versions of all the
+  # underscore functions. Wrapped objects may be chained.
+  wrapper: (obj) ->
+    this._wrapped: obj
+    this
+
+
+  # Establish the object that gets thrown to break out of a loop iteration.
+  breaker: if typeof(StopIteration) is 'undefined' then '__break__' else StopIteration
+
+
+  # Create a safe reference to the Underscore object forreference below.
+  _: root._: (obj) -> new wrapper(obj)
+
+
+  # Export the Underscore object for CommonJS.
+  if typeof(exports) != 'undefined' then exports._: _
+
+
+  # Create quick reference variables for speed access to core prototypes.
+  slice:                Array::slice
+  unshift:              Array::unshift
+  toString:             Object::toString
+  hasOwnProperty:       Object::hasOwnProperty
+  propertyIsEnumerable: Object::propertyIsEnumerable
+
+
+  # Current version.
+  _.VERSION: '0.5.8'
+
+
+  # ------------------------ Collection Functions: ---------------------------
+
+  # The cornerstone, an each implementation.
+  # Handles objects implementing forEach, arrays, and raw objects.
+  _.each: (obj, iterator, context) ->
+    index: 0
+    try
+      return obj.forEach(iterator, context) if obj.forEach
+      if _.isNumber(obj.length)
+        return iterator.call(context, obj[i], i, obj) for i in [0...obj.length]
+      iterator.call(context, val, key, obj) for key, val of obj
+    catch e
+      throw e if e isnt breaker
+    obj
+
+
+  # Return the results of applying the iterator to each element. Use JavaScript
+  # 1.6's version of map, if possible.
+  _.map: (obj, iterator, context) ->
+    return obj.map(iterator, context) if (obj and _.isFunction(obj.map))
+    results: []
+    _.each obj, (value, index, list) ->
+      results.push(iterator.call(context, value, index, list))
+    results
+
+
+  # Reduce builds up a single result from a list of values. Also known as
+  # inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.
+  _.reduce: (obj, memo, iterator, context) ->
+    return obj.reduce(_.bind(iterator, context), memo) if (obj and _.isFunction(obj.reduce))
+    _.each obj, (value, index, list) ->
+      memo: iterator.call(context, memo, value, index, list)
+    memo
+
+
+  # The right-associative version of reduce, also known as foldr. Uses
+  # JavaScript 1.8's version of reduceRight, if available.
+  _.reduceRight: (obj, memo, iterator, context) ->
+    return obj.reduceRight(_.bind(iterator, context), memo) if (obj and _.isFunction(obj.reduceRight))
+    _.each _.clone(_.toArray(obj)).reverse(), (value, index) ->
+      memo: iterator.call(context, memo, value, index, obj)
+    memo
+
+
+  # Return the first value which passes a truth test.
+  _.detect: (obj, iterator, context) ->
+    result: null
+    _.each obj, (value, index, list) ->
+      if iterator.call(context, value, index, list)
+        result: value
+        _.breakLoop()
+    result
+
+
+  # Return all the elements that pass a truth test. Use JavaScript 1.6's
+  # filter(), if it exists.
+  _.select: (obj, iterator, context) ->
+    if obj and _.isFunction(obj.filter) then return obj.filter(iterator, context)
+    results: []
+    _.each obj, (value, index, list) ->
+      results.push(value) if iterator.call(context, value, index, list)
+    results
+
+
+  # Return all the elements for which a truth test fails.
+  _.reject: (obj, iterator, context) ->
+    results: []
+    _.each obj, (value, index, list) ->
+      results.push(value) if not iterator.call(context, value, index, list)
+    results
+
+
+  # Determine whether all of the elements match a truth test. Delegate to
+  # JavaScript 1.6's every(), if it is present.
+  _.all: (obj, iterator, context) ->
+    iterator ||= _.identity
+    return obj.every(iterator, context) if obj and _.isFunction(obj.every)
+    result: true
+    _.each obj, (value, index, list) ->
+      _.breakLoop() unless (result: result and iterator.call(context, value, index, list))
+    result
+
+
+  # Determine if at least one element in the object matches a truth test. Use
+  # JavaScript 1.6's some(), if it exists.
+  _.any: (obj, iterator, context) ->
+    iterator ||= _.identity
+    return obj.some(iterator, context) if obj and _.isFunction(obj.some)
+    result: false
+    _.each obj, (value, index, list) ->
+      _.breakLoop() if (result: iterator.call(context, value, index, list))
+    result
+
+
+  # Determine if a given value is included in the array or object,
+  # based on '==='.
+  _.include: (obj, target) ->
+    return _.indexOf(obj, target) isnt -1 if obj and _.isFunction(obj.indexOf)
+    for key, val of obj
+      return true if val is target
+    false
+
+
+  # Invoke a method with arguments on every item in a collection.
+  _.invoke: (obj, method) ->
+    args: _.rest(arguments, 2)
+    (if method then val[method] else val).apply(val, args) for val in obj
+
+
+  # Convenience version of a common use case of map: fetching a property.
+  _.pluck: (obj, key) ->
+    _.map(obj, ((val) -> val[key]))
+
+
+  # Return the maximum item or (item-based computation).
+  _.max: (obj, iterator, context) ->
+    return Math.max.apply(Math, obj) if not iterator and _.isArray(obj)
+    result: {computed: -Infinity}
+    _.each obj, (value, index, list) ->
+      computed: if iterator then iterator.call(context, value, index, list) else value
+      computed >= result.computed and (result: {value: value, computed: computed})
+    result.value
+
+
+  # Return the minimum element (or element-based computation).
+  _.min: (obj, iterator, context) ->
+    return Math.min.apply(Math, obj) if not iterator and _.isArray(obj)
+    result: {computed: Infinity}
+    _.each obj, (value, index, list) ->
+      computed: if iterator then iterator.call(context, value, index, list) else value
+      computed < result.computed and (result: {value: value, computed: computed})
+    result.value
+
+
+  # Sort the object's values by a criteria produced by an iterator.
+  _.sortBy: (obj, iterator, context) ->
+    _.pluck(((_.map obj, (value, index, list) ->
+      {value: value, criteria: iterator.call(context, value, index, list)}
+    ).sort((left, right) ->
+      a: left.criteria; b: right.criteria
+      if a < b then -1 else if a > b then 1 else 0
+    )), 'value')
+
+
+  # Use a comparator function to figure out at what index an object should
+  # be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex: (array, obj, iterator) ->
+    iterator ||= _.identity
+    low: 0; high: array.length
+    while low < high
+      mid: (low + high) >> 1
+      if iterator(array[mid]) < iterator(obj) then low: mid + 1 else high: mid
+    low
+
+
+  # Convert anything iterable into a real, live array.
+  _.toArray: (iterable) ->
+    return []                   if (!iterable)
+    return iterable.toArray()   if (iterable.toArray)
+    return iterable             if (_.isArray(iterable))
+    return slice.call(iterable) if (_.isArguments(iterable))
+    _.values(iterable)
+
+
+  # Return the number of elements in an object.
+  _.size: (obj) -> _.toArray(obj).length
+
+
+  # -------------------------- Array Functions: ------------------------------
+
+  # Get the first element of an array. Passing "n" will return the first N
+  # values in the array. Aliased as "head". The "guard" check allows it to work
+  # with _.map.
+  _.first: (array, n, guard) ->
+    if n and not guard then slice.call(array, 0, n) else array[0]
+
+
+  # Returns everything but the first entry of the array. Aliased as "tail".
+  # Especially useful on the arguments object. Passing an "index" will return
+  # the rest of the values in the array from that index onward. The "guard"
+  # check allows it to work with _.map.
+  _.rest: (array, index, guard) ->
+    slice.call(array, if _.isUndefined(index) or guard then 1 else index)
+
+
+  # Get the last element of an array.
+  _.last: (array) -> array[array.length - 1]
+
+
+  # Trim out all falsy values from an array.
+  _.compact: (array) -> item for item in array when item
+
+
+  # Return a completely flattened version of an array.
+  _.flatten: (array) ->
+    _.reduce array, [], (memo, value) ->
+      return memo.concat(_.flatten(value)) if _.isArray(value)
+      memo.push(value)
+      memo
+
+
+  # Return a version of the array that does not contain the specified value(s).
+  _.without: (array) ->
+    values: _.rest(arguments)
+    val for val in _.toArray(array) when not _.include(values, val)
+
+
+  # Produce a duplicate-free version of the array. If the array has already
+  # been sorted, you have the option of using a faster algorithm.
+  _.uniq: (array, isSorted) ->
+    memo: []
+    for el, i in _.toArray(array)
+      memo.push(el) if i is 0 || (if isSorted is true then _.last(memo) isnt el else not _.include(memo, el))
+    memo
+
+
+  # Produce an array that contains every item shared between all the
+  # passed-in arrays.
+  _.intersect: (array) ->
+    rest: _.rest(arguments)
+    _.select _.uniq(array), (item) ->
+      _.all rest, (other) ->
+        _.indexOf(other, item) >= 0
+
+
+  # Zip together multiple lists into a single array -- elements that share
+  # an index go together.
+  _.zip: ->
+    length:     _.max(_.pluck(arguments, 'length'))
+    results:    new Array(length)
+    for i in [0...length]
+      results[i]: _.pluck(arguments, String(i))
+    results
+
+
+  # If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
+  # we need this function. Return the position of the first occurence of an
+  # item in an array, or -1 if the item is not included in the array.
+  _.indexOf: (array, item) ->
+    return array.indexOf(item) if array.indexOf
+    i: 0; l: array.length
+    while l - i
+      if array[i] is item then return i else i++
+    -1
+
+
+  # Provide JavaScript 1.6's lastIndexOf, delegating to the native function,
+  # if possible.
+  _.lastIndexOf: (array, item) ->
+    return array.lastIndexOf(item) if array.lastIndexOf
+    i: array.length
+    while i
+      if array[i] is item then return i else i--
+    -1
+
+
+  # Generate an integer Array containing an arithmetic progression. A port of
+  # the native Python range() function. See:
+  # http://docs.python.org/library/functions.html#range
+  _.range: (start, stop, step) ->
+    a:        arguments
+    solo:     a.length <= 1
+    i: start: if solo then 0 else a[0]
+    stop:     if solo then a[0] else a[1]
+    step:     a[2] or 1
+    len:      Math.ceil((stop - start) / step)
+    return [] if len <= 0
+    range:    new Array(len)
+    idx:      0
+    while true
+      return range if (if step > 0 then i - stop else stop - i) >= 0
+      range[idx]: i
+      idx++
+      i+= step
+
+
+  # ----------------------- Function Functions: -----------------------------
+
+  # Create a function bound to a given object (assigning 'this', and arguments,
+  # optionally). Binding with arguments is also known as 'curry'.
+  _.bind: (func, obj) ->
+    args: _.rest(arguments, 2)
+    -> func.apply(obj or root, args.concat(arguments))
+
+
+  # Bind all of an object's methods to that object. Useful for ensuring that
+  # all callbacks defined on an object belong to it.
+  _.bindAll: (obj) ->
+    funcs: if arguments.length > 1 then _.rest(arguments) else _.functions(obj)
+    _.each(funcs, (f) -> obj[f]: _.bind(obj[f], obj))
+    obj
+
+
+  # Delays a function for the given number of milliseconds, and then calls
+  # it with the arguments supplied.
+  _.delay: (func, wait) ->
+    args: _.rest(arguments, 2)
+    setTimeout((-> func.apply(func, args)), wait)
+
+
+  # Defers a function, scheduling it to run after the current call stack has
+  # cleared.
+  _.defer: (func) ->
+    _.delay.apply(_, [func, 1].concat(_.rest(arguments)))
+
+
+  # Returns the first function passed as an argument to the second,
+  # allowing you to adjust arguments, run code before and after, and
+  # conditionally execute the original function.
+  _.wrap: (func, wrapper) ->
+    -> wrapper.apply(wrapper, [func].concat(arguments))
+
+
+  # Returns a function that is the composition of a list of functions, each
+  # consuming the return value of the function that follows.
+  _.compose: ->
+    funcs: arguments
+    ->
+      args: arguments
+      for i in [(funcs.length - 1)..0]
+        args: [funcs[i].apply(this, args)]
+      args[0]
+
+
+  # ------------------------- Object Functions: ----------------------------
+
+  # Retrieve the names of an object's properties.
+  _.keys: (obj) ->
+    return _.range(0, obj.length) if _.isArray(obj)
+    key for key, val of obj
+
+
+  # Retrieve the values of an object's properties.
+  _.values: (obj) ->
+    _.map(obj, _.identity)
+
+
+  # Return a sorted list of the function names available in Underscore.
+  _.functions: (obj) ->
+    _.select(_.keys(obj), (key) -> _.isFunction(obj[key])).sort()
+
+
+  # Extend a given object with all of the properties in a source object.
+  _.extend: (destination, source) ->
+    for key, val of source
+      destination[key]: val
+    destination
+
+
+  # Create a (shallow-cloned) duplicate of an object.
+  _.clone: (obj) ->
+    return obj.slice(0) if _.isArray(obj)
+    _.extend({}, obj)
+
+
+  # Invokes interceptor with the obj, and then returns obj.
+  # The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
+  _.tap: (obj, interceptor) ->
+    interceptor(obj)
+    obj
+
+
+  # Perform a deep comparison to check if two objects are equal.
+  _.isEqual: (a, b) ->
+    # Check object identity.
+    return true if a is b
+    # Different types?
+    atype: typeof(a); btype: typeof(b)
+    return false if atype isnt btype
+    # Basic equality test (watch out for coercions).
+    return true if `a == b`
+    # One is falsy and the other truthy.
+    return false if (!a and b) or (a and !b)
+    # One of them implements an isEqual()?
+    return a.isEqual(b) if a.isEqual
+    # Check dates' integer values.
+    return a.getTime() is b.getTime() if _.isDate(a) and _.isDate(b)
+    # Both are NaN?
+    return true if _.isNaN(a) and _.isNaN(b)
+    # Compare regular expressions.
+    if _.isRegExp(a) and _.isRegExp(b)
+      return a.source     is b.source and
+             a.global     is b.global and
+             a.ignoreCase is b.ignoreCase and
+             a.multiline  is b.multiline
+    # If a is not an object by this point, we can't handle it.
+    return false if atype isnt 'object'
+    # Check for different array lengths before comparing contents.
+    return false if a.length and (a.length isnt b.length)
+    # Nothing else worked, deep compare the contents.
+    aKeys: _.keys(a); bKeys: _.keys(b)
+    # Different object sizes?
+    return false if aKeys.length isnt bKeys.length
+    # Recursive comparison of contents.
+    # for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
+    return true
+
+
+  # Is a given array or object empty?
+  _.isEmpty:      (obj) -> _.keys(obj).length is 0
+
+
+  # Is a given value a DOM element?
+  _.isElement:    (obj) -> obj and obj.nodeType is 1
+
+
+  # Is a given value an array?
+  _.isArray:      (obj) -> !!(obj and obj.concat and obj.unshift)
+
+
+  # Is a given variable an arguments object?
+  _.isArguments:  (obj) -> obj and _.isNumber(obj.length) and not obj.concat and
+                           not obj.substr and not obj.apply and not propertyIsEnumerable.call(obj, 'length')
+
+
+  # Is the given value a function?
+  _.isFunction:   (obj) -> !!(obj and obj.constructor and obj.call and obj.apply)
+
+
+  # Is the given value a string?
+  _.isString:     (obj) -> !!(obj is '' or (obj and obj.charCodeAt and obj.substr))
+
+
+  # Is a given value a number?
+  _.isNumber:     (obj) -> (obj is +obj) or toString.call(obj) is '[object Number]'
+
+
+  # Is a given value a Date?
+  _.isDate:       (obj) -> !!(obj and obj.getTimezoneOffset and obj.setUTCFullYear)
+
+
+  # Is the given value a regular expression?
+  _.isRegExp:     (obj) -> !!(obj and obj.exec and (obj.ignoreCase or obj.ignoreCase is false))
+
+
+  # Is the given value NaN -- this one is interesting. NaN != NaN, and
+  # isNaN(undefined) == true, so we make sure it's a number first.
+  _.isNaN:        (obj) -> _.isNumber(obj) and window.isNaN(obj)
+
+
+  # Is a given value equal to null?
+  _.isNull:       (obj) -> obj is null
+
+
+  # Is a given variable undefined?
+  _.isUndefined:  (obj) -> typeof obj is 'undefined'
+
+
+  # -------------------------- Utility Functions: --------------------------
+
+  # Run Underscore.js in noConflict mode, returning the '_' variable to its
+  # previous owner. Returns a reference to the Underscore object.
+  _.noConflict: ->
+    root._: previousUnderscore
+    this
+
+
+  # Keep the identity function around for default iterators.
+  _.identity: (value) -> value
+
+
+  # Break out of the middle of an iteration.
+  _.breakLoop: -> throw breaker
+
+
+  # Generate a unique integer id (unique within the entire client session).
+  # Useful for temporary DOM ids.
+  idCounter: 0
+  _.uniqueId: (prefix) ->
+    (prefix or '') + idCounter++
+
+
+  # By default, Underscore uses ERB-style template delimiters, change the
+  # following template settings to use alternative delimiters.
+  _.templateSettings: {
+    start:        '<%'
+    end:          '%>'
+    interpolate:  /<%=(.+?)%>/g
+  }
+
+
+  # JavaScript templating a-la ERB, pilfered from John Resig's
+  # "Secrets of the JavaScript Ninja", page 83.
+  # Single-quote fix from Rick Strahl's version.
+  _.template: (str, data) ->
+    c: _.templateSettings
+    fn: new Function 'obj',
+      'var p=[],print=function(){p.push.apply(p,arguments);};' +
+      'with(obj){p.push(\'' +
+      str.replace(/[\r\t\n]/g, " ")
+         .replace(new RegExp("'(?=[^"+c.end[0]+"]*"+c.end+")","g"),"\t")
+         .split("'").join("\\'")
+         .split("\t").join("'")
+         .replace(c.interpolate, "',$1,'")
+         .split(c.start).join("');")
+         .split(c.end).join("p.push('") +
+         "');}return p.join('');"
+    if data then fn(data) else fn
+
+
+  # ------------------------------- Aliases ----------------------------------
+
+  _.forEach: _.each
+  _.foldl:   _.inject:      _.reduce
+  _.foldr:   _.reduceRight
+  _.filter:  _.select
+  _.every:   _.all
+  _.some:    _.any
+  _.head:    _.first
+  _.tail:    _.rest
+  _.methods: _.functions
+
+
+  # ------------------------ Setup the OOP Wrapper: --------------------------
+
+  # Helper function to continue chaining intermediate results.
+  result: (obj, chain) ->
+    if chain then _(obj).chain() else obj
+
+
+  # Add all of the Underscore functions to the wrapper object.
+  _.each _.functions(_), (name) ->
+    method: _[name]
+    wrapper.prototype[name]: ->
+      unshift.call(arguments, this._wrapped)
+      result(method.apply(_, arguments), this._chain)
+
+
+  # Add all mutator Array functions to the wrapper.
+  _.each ['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], (name) ->
+    method: Array.prototype[name]
+    wrapper.prototype[name]: ->
+      method.apply(this._wrapped, arguments)
+      result(this._wrapped, this._chain)
+
+
+  # Add all accessor Array functions to the wrapper.
+  _.each ['concat', 'join', 'slice'], (name) ->
+    method: Array.prototype[name]
+    wrapper.prototype[name]: ->
+      result(method.apply(this._wrapped, arguments), this._chain)
+
+
+  # Start chaining a wrapped Underscore object.
+  wrapper::chain: ->
+    this._chain: true
+    this
+
+
+  # Extracts the result from a wrapped and chained object.
+  wrapper::value: -> this._wrapped

examples/web_server.coffee

@@ -0,0 +1,12 @@
+# Contributed by Jason Huggins
+
+http: require 'http'
+
+server: http.createServer (req, res) ->
+  res.sendHeader 200, {'Content-Type': 'text/plain'}
+  res.sendBody 'Hello, World!'
+  res.finish()
+
+server.listen 3000
+
+puts "Server running at http://localhost:3000/"