mirror of
https://github.com/jashkenas/coffeescript.git
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79 lines
1.3 KiB
CoffeeScript
79 lines
1.3 KiB
CoffeeScript
x: 1
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y: {}
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y.x: -> 3
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puts x is 1
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puts typeof(y.x) is 'function'
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puts y.x instanceof Function
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puts y.x() is 3
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puts y.x.name is 'x'
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# The empty function should not cause a syntax error.
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->
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obj: {
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name: "Fred"
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bound: ->
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(=> puts(this.name is "Fred"))()
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unbound: ->
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(-> puts(!this.name?))()
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}
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obj.unbound()
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obj.bound()
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# The named function should be cleared out before a call occurs:
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# Python decorator style wrapper that memoizes any function
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memoize: (fn) ->
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cache: {}
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self: this
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(args...) ->
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key: args.toString()
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return cache[key] if cache[key]
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cache[key] = fn.apply(self, args)
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Math: {
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Add: (a, b) -> a + b
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AnonymousAdd: ((a, b) -> a + b)
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FastAdd: memoize (a, b) -> a + b
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}
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puts Math.Add(5, 5) is 10
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puts Math.AnonymousAdd(10, 10) is 20
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puts Math.FastAdd(20, 20) is 40
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# Parens are optional on simple function calls.
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puts 100 > 1 if 1 > 0
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puts true unless false
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puts true for i in [1..3]
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puts_func: (f) -> puts(f())
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puts_func -> true
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# Optional parens can be used in a nested fashion.
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call: (func) -> func()
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result: call ->
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inner: call ->
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Math.Add(5, 5)
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puts result is 10
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# And even with strange things like this:
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funcs: [(x) -> x, (x) -> x * x]
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result: funcs[1] 5
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puts result is 25
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result: ("hello".slice) 3
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puts result is 'lo' |