Ideally, every function you write returns a meaningful value ... even if that function is used for nothing more than side effects, and that value is just "true"

Ideally, every function you write returns a meaningful value ... even if that function is used for nothing more than side effects, and that value is just "true", or "null". To create a void function in CoffeeScript, just add a naked "return" as the final line. sideEffecty = -> do something do somethingElse return