Web Reference: Newcomers to CoffeeScript often wonder how to generate the JavaScript function foo() {}, as opposed to the foo = function() {} that CoffeeScript produces. The first form is a function declaration, and the second is a function expression. In CoffeeScript, we define only function expressions. The function keyword is eliminated in CoffeeScript. To define a function here, we have to use a thin arrow (->). Behind the scenes, the CoffeeScript compiler converts the arrow in to the function definition in JavaScript as shown below. Jul 1, 2011 · CoffeeScript uses function declarations (aka "named functions") in just one place: class definitions. For instance, compiles to. Foo = (function() { function Foo() {} return Foo; The reason CoffeeScript doesn't use function declarations elsewhere, according to the FAQ: Blame Microsoft for this one.
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