gistfile1.rb

class Dog
  attr_accessor :breed, :color, :description

	def Dog.description
		# Return @@description, unless it's nil, in that case return a fixed string.
		@@description ||= "All dogs are 4 legged animals that bark."
	end

	def Dog.description=(new_description)
		@@description = new_description
	end


	def initialize(breed, color, description)
		@breed = breed
		@color = color
		@description = description
	end
end

fido = Dog.new("beagle", "white", "Fido is a sad, sad dog.")
rover = Dog.new("retriever", "golden", "Rover likes to fetch.")

# Shows Fido's description
puts fido.description

# Shows Rover's description
puts rover.description

# Shows the description of the Dog class - completely unrelated to a description of ONE dog
puts Dog.description

# Change the description of the Dog class - completely unrelated to a description of ONE dog
Dog.description = "Dogs are stupid animals that are clearly inferior to cats."
puts Dog.description

# Still Fido's description
puts fido.description