class Dictionary
  constructor: ()->
    @keys = []
    @values = []

  add: (key, value)->
        @keys.push(key)
        @values.push(value)

    get: (key) ->
    val for val in @keys when val is key

  length: () ->
    @keys.length

    removeAll: () ->
        @keys.length = 0
        @values.length = 0