From: Elliott Hird <penguinofthegods@...>
Date: 2008-03-02T06:40:56+09:00
Subject: Re: Using a class to extend a singleton?

On 01/03/2008, Trans <transfire@gmail.com> wrote:
> Given:
>
>   class X
>     def yo=x; @yo=x; end
>   end
>
>   class Y
>     def yo!; puts @yo; end
>   end
>
>   x = X.new
>
>  Is there any way to extend x with Y's functionality (without going
>  back and changing the given code)? Eg.
>
>   >> x.yo="Hello World"
>   >> x.yo!
>   Hello World
>
>
>  T.

class << x; Y.instance_methods.each {|m| define_method m, Y.method(:m)}; end

kind of. brings in Object onwards, though, but that's easy to fix.

-ehird