From: Kent Dahl <kentda@...>
Date: 2002-12-06T16:58:47+09:00
Subject: Re: Printing subclasses

ted wrote:
> 
> Can Ruby print the subclasses of a given class?  Like the reverse of the
> example of Class#superclass in "Reflection, ObjectSace and Distributed
> Ruby" in pickaxe.

A heavy handed way is using ObjectSpace:

a = StandardError # just as an example
ObjectSpace.each_object(Class){|i| puts i if i.superclass==a}

Probably exists a neater way that has eluded me so far. 

-- 
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