From: Stefan Lang <perfectly.normal.hacker@...>
Date: 2008-01-27T06:26:42+09:00
Subject: Re: Adding code/Extending methods after they have been written?

> Does anyone else of you know of a way to add "code rules"
> to some methods? Something like this would be cool:

Looks like a good use case for Aspect oriented programming.
AOP frameworks provide mechanisms to do exactly that.
There are (at least) two AOP frameworks on RubyForge:
aspectr and aquarium.

Otherwise it's fairly easy to create such a facility
from scratch via alias_method.