iseitz

class PlayingCard

  attr_accessor :rank, :suite
  def initialize (rank, suite)
    @rank = rank
    @suite = suite
  end
  def face_card?
    ['K', 'Q', 'J'].include?(@rank)
  end

iseitz

animal = "cat"
class << animal
  def speak
    puts "miow"
  end
end

animal.speak

#self is assigned to the object and then the method is found for this class of the object via Singleton (unique methods table). One to the right, one up

iseitz

max = -1
vowels_hash.each do |vowel, frequency|
 if frequency > max
    max = frequency
 end
end