CoffeeScript Jquery better each loop

# Better each() for use with coffeescript
# 1. Wraps child in jquery object
# 2. Sets child first argument, so that fat-binding can be used.
# 3. Sets @ as well, for normal binds
jQuery.fn.loop = (block) ->
  for i in @
    element = jQuery(i)
    res = block.call element, element
    break if res == false


### USE

$('.photo').loop ->
  @hide()

$('.thing').loop (thing) =>
  thing.css
    width: @width()