nil and false notion...

gistfile1.rb

  def mealtimes(meal)
    arr = [meal.breakfast, meal.lunch, meal.dinner]
    if arr == [true, true, true]
      "breakfast, lunch, and dinner"
    elsif arr == [false, false, false]
      ""
    elsif arr == [true, true, false]
      "breakfast and lunch"
    elsif arr == [true, false, true]
      "breakfast and dinner"
    elsif arr == [false, true, true]
      "lunch and dinner"
    elsif arr == [true, false, false]
      "breakfast"
    elsif arr == [false, true, false]
      "lunch"
    elsif arr == [false, false, true]
      "dinner"
    else
      "ERROR"
    end
  end