Fun with Ruby's Enumerator

enumerator.rb

class Whatever
  def run
    fetch_paginated_data('Whatever...').each do |item|
      puts item
    end
  end

  def fetch_paginated_data(obj)
    Enumerator.new do |yielder|
      loop do
        result = get_data

        if result != 0
          yielder << result
        else
          raise StopIteration
        end
      end
    end
  end

  def get_data
    DateTime.now.second % 7
  end
end