#from Design Patterns by Russ Olsen pg 128-129
module Shared
  class ArrayIterator
    def initialize(array)
      @array = array
      @index = 0
    end

    def has_next?
      @index < @array.length
    end

    def item
      @array[@index]
    end

    def peek
      @array[@index]
    end

    def next_item
      value = @array[@index]
      @index += 1
      value
    end
  end
end