WIP: Use rake to start compiling resources (like require.coffee)

src/stdlib/underscore-extensions.coffee

@@ -0,0 +1,53 @@
+_ = require 'underscore'
+
+_.mixin
+  remove: (array, element) ->
+    index = array.indexOf(element)
+    array.splice(index, 1) if index >= 0
+
+  sum: (array) ->
+    sum = 0
+    sum += elt for elt in array
+    sum
+
+  adviseBefore: (object, methodName, advice) ->
+    original = object[methodName]
+    object[methodName] = (args...) ->
+      unless advice.apply(this, args) == false
+        original.apply(this, args)
+
+  escapeRegExp: (string) ->
+    # Referring to the table here:
+    # https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/regexp
+    # these characters should be escaped
+    # \ ^ $ * + ? . ( ) | { } [ ]
+    # These characters only have special meaning inside of brackets
+    # they do not need to be escaped, but they MAY be escaped
+    # without any adverse effects (to the best of my knowledge and casual testing)
+    # : ! , =
+    # my test "~!@#$%^&*(){}[]`/=?+\|-_;:'\",<.>".match(/[\#]/g)
+
+    specials = [
+      # order matters for these
+      "-"
+      "["
+      "]"
+      # order doesn't matter for any of these
+      "/"
+      "{"
+      "}"
+      "("
+      ")"
+      "*"
+      "+"
+      "?"
+      "."
+      "\\"
+      "^"
+      "$"
+      "|"]
+
+    # I choose to escape every character with '\'
+    # even though only some strictly require it when inside of []
+    regex = RegExp('[' + specials.join('\\') + ']', 'g')
+    string.replace(regex, "\\$&");