How to use setTimeout() in Coffeescript

Question

I can't seem to use setTimeout() to call one of my own functions. I can use setTimeout to call alert(), but not a function that I've written myself. Here's the simplest code that reproduces the problem:

I have the following coffeeScript

    setTimeout(run, 1000)      run = () ->         console.log("run was called!") 

Which generates the following Javascript

    // Generated by CoffeeScript 1.6.3     (function() {       var run;        setTimeout(run, 1000);        run = function() {         return console.log("run was called!");       };      }).call(this); 

Nothing is printed to the console.

Answer 1

run = () ->     console.log("run was called!") setTimeout(run, 1000) 

You are relying on javascript function hoisting for functions declared with the syntax function run(){}, but coffeescript declares them as variables: var run = function(){}, so you have to define the function before you reference it, otherwise it's still undefined when you pass it to setTimeout.