Inverse _.partial

dispatcher.coffee

# we have an event aggregator that is treated as an adapter to hide 
# whatever eventing lib/framework/utility we decide to use
#
# originally, it was backed by Backbone.Events. Now it's Angular's $rootScope
#
# `on` accepts a callback  that expects to be given event args. (as backbone.events does)
#
# Angular's $on, on the other hand, accepts a callback that expects
# $scope as the first param, followed by event args.

# Below, our implementation just works around it by essentially wrapping the 
# callback in another function that separates `scope` from the rest of the event args.
#
# This is done by splatting args[1]..args[n], and then just apply-ing them to the original handler
#
# This could probably be wrapped up as a utility function implemented using _.wrap

class Dispatcher
  on: (eventName, handler, context) ->
    @scope.$on eventName, (scope, args...) ->
      handler.apply context, args

  #...