From: Gene Tani <gene.tani@...>
Date: 2005-07-15T09:50:52+09:00
Subject: Re: difference?

Hmm, seems to be few ways to test/monitor
membership/inheritance/mix-in-ness:

Object#kind_of?, #is_a?, #instance_of?, #type (deprecated), #class

Module#ancestors, #included_modules

Class#inherited

MyClassname === myobj