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56 lines
1.2 KiB
Markdown
56 lines
1.2 KiB
Markdown
---
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language: coffeescript
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contributors:
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- ["Tenor Biel", "http://github.com/L8D"]
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filename: coffeescript.coffee
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---
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``` coffeescript
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# CoffeeScript is a hipster language.
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# It goes with the trends of many modern languages.
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# So comments are like Ruby and Python, they use hashes.
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###
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Block comments are like these, and they translate directly to '/ *'s and '* /'s
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for the resulting JavaScript code.
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You should understand most of JavaScript semantices
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before continuing.
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###
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# Assignment:
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number = 42 #=> var number = 42;
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opposite = true #=> var opposite = true;
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# Conditions:
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number = -42 if opposite #=> if(opposite) { number = -42; }
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# Functions:
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square = (x) -> x * x #=> var square = function(x) { return x * x; }
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# Ranges:
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list = [1..5] #=> var list = [1, 2, 3, 4, 5];
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# Objects:
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math =
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root: Math.sqrt
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square: square
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cube: (x) -> x * square x
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#=> var math = {
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# "root": Math.sqrt,
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# "square": square,
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# "cube": function(x) { return x * square(x); }
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#}
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# Splats:
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race = (winner, runners...) ->
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print winner, runners
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# Existence:
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alert "I knew it!" if elvis?
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#=> if(typeof elvis !== "undefined" && elvis !== null) { alert("I knew it!"); }
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# Array comprehensions:
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cubes = (math.cube num for num in list) #=> ...
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```
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