jontore

class Array

  def my_each(offset = 0)
    i = 0
    while(i < self.size)
        yield(self[i])
        i += 1
    end
  end

jontore

class InvalidScoreError < StandardError
end

class Presentation
  attr_reader :title, :presenter, :scores

  def initialize(title, presenter)
    @title = title
    @presenter = presenter
  end