A LinkedList (with Node and Iterator) written in Coffeescript to exercise my mind!

LinkedList.coffee

class LinkedList 
  isEmpty: ->
    not @head?
 
  prepend: (item) ->
    node = new Node item, @head
    @tail = node if @isEmpty()
    @head = node
    
  append: (item) ->
    node = new Node item, null
    if @tail?
      @tail.next = node
    if @isEmpty()
      @head = node
    @tail = node
  
  iterator: ->
    new Iterator @head
    
class Iterator
  constructor: (@pos) ->
  
  hasNext: ->
    @pos?
  
  next: ->
    throw new Error "Dafuq?" if not @hasNext()
    ret = @pos
    @pos = @pos.next
    ret.item
    
    
 
class Node
  constructor: (@item, @next) ->
 
blah = new LinkedList()

blah.append "LOL"
blah.append "JK"
blah.prepend "Whee!"
blah.prepend 4
blah.prepend "WHAT IS HAPPENING."
 
itr = blah.iterator()
while itr.hasNext()
  console.log itr.next()