jashkenas--coffeescript/documentation/sections/functions.md

Functions

Functions are defined by an optional list of parameters in parentheses, an arrow, and the function body. The empty function looks like this: ->

codeFor('functions', 'cube(5)')

Functions may also have default values for arguments, which will be used if the incoming argument is missing (undefined).

codeFor('default_args', 'fill("cup")')