Simple Polymorphism - Now with more cheese

cheese.rb

class Cheese
  attr_reader :name
  
  def initialize
    @name = "cheese"
  end
  
  def eat_cheese(cheese)
    puts "This " + cheese.name + " is great!"
  end
  
end

class CheddarCheese < Cheese 
  attr_reader :name
  def initialize
    @name = "cheddar cheese"
  end
end

cc = CheddarCheese.new

cc.eat_cheese(cc) # puts 'This cheddar cheese is great.'

Not only is this polymorphism, but it uses the Decorator Pattern (http://en.wikipedia.org/wiki/Decorator_pattern)

Great to know! Thanks!