Ruby simple delegator

gistfile1.rb

# Example from http://mikepackdev.com/blog_posts/31-exhibit-vs-presenter

class Decorator < SimpleDelegator
end

class Car
  def price
    1_000_000
  end  
end  

car = Car.new
car.price
=> 1000000

decorated_car = Decorator.new(car)
decorated_car.price
=> 1000000

class CarWithHeatedSeats < Decorator
  def price
    super + 5_000
  end  
end  

car = CarWithHeatedSeats.new(car)
car.price
=> 1005000