mooncake fun

oven.rb

class Oven
    def bake item
        item.to_cookie
    end
end

class PorkMooncake
    def to_cookie
        PorkCookie.new
    end
end

class PorkCookie
    def is_delicious?
        true
    end
end

oven = Oven.new
result = oven.bake PorkMooncake.new
puts result.is_a? PorkMooncake
puts result.is_a? PorkCookie
puts result.is_delicious?