From: Rick DeNatale <rick.denatale@...>
Date: 2007-11-08T20:42:13+09:00
Subject: Re: Metaclasses

On 11/8/07, David A. Black <dblack@rubypal.com> wrote:

> It actually depends which version of Ruby you use. The superclass
> thing worked as expected in 1.8.2; then it stopped working (I'm not
> sure why); and in 1.9 it's working again. ("Not working" doesn't mean
> that the subclasses couldn't call the methods defined in their
> superclasses' singleton classes, just that the superclass thing itself
> was not in place.)

interesting, I didn't realize that this had changed in 1.9.

Actually, it's not that anything isn't in place in 1.8, it's that the
implementation of Class#superclass skips classes in the superclass
chain, the same way that Object#class skips an instance singleton
class if there is one, and the ancestors methods replaces the wrapper
IClass nodes used to represent included modules in the behavior chain
of an object into the modules themselves in the result.

It's smoke and mirrors, and in the case of Ruby 1.9 it seems theres a
little less smoke and mirrors in Class#superclass.


-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/