Inject method in CoffeSrcipt using JQuery

inject.coffee

# inject function
inject = (collection, object, handler)->
  $.each collection, (index, value)->
    object = handler(object, value)
    true
  object

# the same as a method
inject_method = (object, handler)->
  inject(this, object, handler)
  
# iterating over jquery object
$.fn.inject = inject_method
  
# iterating over arrays
if Array.prototype.inject = undefined
  Array.prototype.inject = inject_method