Obj update in jQuery coffeescript

gistfile1.coffee

class MyApp.Update
 
  constructor: (@obj, @attrs={}) ->

    @obj.data ?= {}
    @obj.isOwned = false
 
    $.extend @attrs,
      ownerId: (v) =>
        @obj.isOwned = MyApp.account.signedIn v
 
  set: (k, v) =>
 
    if @obj.data[k] != v
      @obj.data[k] = v
      @run k, v
 
    @obj
 
  all: (data) =>
 
    c = {}
 
    $.each data, (k, v) =>
      if @obj.data[k] != v
        @obj.data[k] = v
        c[k] = v
      true
 
    $.each c, (k, v) =>
      @run k, v
      true
 
    @obj
 
  run: (k, v) =>
 
    if @attrs[k] && $.isFunction(@attrs[k])
      @attrs[k](v)