CoffeeScript: The '=>' operator

first.try.coffee

outerFunctionWithCallback = (options, callback) ->
  # Do something with options
  callback()

theFunction = ->
  self = @
  @doFirstThing = -> # ...

  @doSecondThing = -> # ...

  initialize = ->
    self.doFirstThing();
    self.doSecondThing();

  outerFunctionWithCallback {}, initialize;

first.try.js

var outerFunctionWithCallback = function(options, callback) {
  /* Do something with options */
  callback();
};

var theFunction = function(){
  var self = this;
  this.doFirstThing = function() { /* ... */ };

  this.doSecondThing = function() { /* ... */ };

  var initialize = function() {
    self.doFirstThing();
    self.doSecondThing();
  };

  outerFunctionWithCallback({/* options */}, initialize);
};

second.try.coffee

outerFunctionWithCallback = (options, callback) ->
  # Do something with options
  callback()

theFunction = ->
  @doFirstThing = -> # ...

  @doSecondThing = -> # ...

  initialize = =>
    @doFirstThing();
    @doSecondThing();

  outerFunctionWithCallback {}, initialize;