From: Chris Morris <chrismo@...>
Date: 2004-01-03T14:25:23+09:00
Subject: Execute code on descendant class init

I've got the following code:

    class Main
      @@classes = []
     
      def Main.classes
        @@classes
      end
    end

    class Root
      Main.classes << self
    end

    class A < Root
    end

    class B < Root
    end

    puts Main.classes.inspect


I'd like Main.classes == [Root, A, B], but currently it only is [Root]. 
I understand why, but was wondering if there was an elegant way to get 
what I'd like to have.

I know in this example, I could simply add "Main.classes << self" to 
each subclass, but, hey, that's way too much repetition for the 21st 
century. :-)

-- 
Chris
http://clabs.org/blogki