Re: Docs, questions and stuff
Re: Docs, questions and stuff
- Subject: Re: Docs, questions and stuff
- From: John Hörnkvist <email@hidden>
- Date: Sat, 25 Aug 2001 01:17:54 +0200
On Saturday, August 25, 2001, at 01:05 AM, Stuppel, Searle @ San Diego
Central wrote:
I thought that in VERY RARE instances some classes in cocoa can inherit
from
two superclasses. Not sure on this though. I just remember reading
something
to this effect.
We don't have a runtime that supports it. Each object has a single "isa"
(read that as "is a") pointing to a class, and each class has a "super"
pointing to another class. (Or nil if it's the root object.)
You can do tricks to support similar concepts; take a look at my
ConcreteProtocols framework for an example.
Regards,
John Hornkvist
--
ToastedMarshmallow, the perfect Cocoa companion
http://www.toastedmarshmallow.com