From: Intransition <transfire@...>
Date: 2010-02-13T12:58:07+09:00
Subject: Re: Is there a way to get a method to always run at the end of any 	descendent's initialize method?

Or something like:

  require 'facets/kernel/as'

  class MyClass
    class << self
      alias _new new
      def new
        instance = _new
        ancestors.reverse_each do |anc|
          if anc.instance_methods(false).include?(:preinitialize)
            instance.as(anc).preinitialize
          end
        end
      end
    end
  end

Then define #preinitialize at any level you wish.

(Note this is off the top of my head so it may need tweaking to run).