Multiple jQuery extensions in the same CoffeeScript file

I want to put more than one jquery extension in the same file. I have the following in one file:

do($ = jQuery) ->
  $.fn.addAlternatingStyles = ->
    $(@).children('tr').not('.exclude').hover(
      -> $(@).addClass('hoverrow')
      -> $(@).removeClass('hoverrow')
    )

do($ = jQuery) ->  
 开发者_StackOverflow中文版 $.fn.stripe = ->
    $(@).children('tr:even').addClass('evenrow')
    $(@).children('tr:odd').addClass('oddrow')

It does not recognise the second extension, i.e. stripe.

Can anyone point me in the right direction?

---

You don't need to use separate do.

do($ = jQuery) ->
  $.fn.addAlternatingStyles = ->
    $(@).children('tr').not('.exclude').hover(
      -> $(@).addClass('hoverrow')
      -> $(@).removeClass('hoverrow')
    )

  $.fn.stripe = ->
    $(@).children('tr:even').addClass('evenrow')
    $(@).children('tr:odd').addClass('oddrow')