Ruby metaprogramming awesomeness

gistfile1.txt

class Foo
  def method_missing(method_name, *args)
    puts "There's no method here by the name #{method_name}. You suck!\n\n"

    singleton_class.superclass.send :define_method, method_name do |*args|
      puts "I lied. This method was totally here all along."
      puts "Look, I can see the arguments: #{args.join ' '}\n\n"
    end

  end
end

my_foo = Foo.new

my_foo.do_some_crazy_stuff_with_horses("palomino", "pinto", "pony")
my_foo.do_some_crazy_stuff_with_horses("palomino", "pinto", "pony")

my_other_foo = Foo.new

my_other_foo.do_some_crazy_stuff_with_horses("palomino", "pinto", "pony")