Lists in Coffeescript

gistfile1.coffee

class List
	constructor:()->
	  @dataStore=[]
	  @pos=0
	  @listSize = 0
	length:()->
	  @listSize
	clear:()->
	  @dataStore = []
	  @listSize = @pos = 0
	toString:()->
	  @dataStore
	insert:(element, prev)->
	  position = @find(prev)
		if position > -1
			@dataStore.splice(position, 0, element)
			++@listSize
			return true
		return false
	append:(element)->
		@dataStore[++@listSize] = element
	remove:(element)->
		position = @find(element)
		if position > -1
			@dataStore.splice(position,1)
			--@listSize
			return true
		return false
	contains:(element)->
		for elem in @dataStore
			return true if elm == element
		return false
	front:()->
		@pos = 0
	end:()->
		@pos = @listSize -1
	prev:(func)->
		--@pos if @pos > 0
	next:(func)->
		++@pos if @pos < @listSize - 1
	currPos:(func)->
		@pos
	getElement:()->
		@dataStore[@pos]
	find:(element)->
		for elem in @dataStore
			return elem if elem == element
		return -1