From: Gawnsoft <xlucid@...>
Date: 2003-08-21T23:33:46+09:00
Subject: Re: Class variables - a surprising result

On Thu, 21 Aug 2003 19:02:43 +0900, David Heinemeier Hansson
<david@loudthinking.com> wrote (more or less):

>> Class variable allocation is per class scope, not per subclass scope.
>> Sub1, Sub2 and Sup really do share their class variables. Now don't
>> ask me for the "why exactly"...
>
>I was fooled by this as well. I don't know why I intuitively would 
>think that a subclass would get its own scope, but I did. Having your 
>own scope as a subclass would be a really neat addition, though. But 
>perhaps a reason from Matz would shed light?

A class-instance variable is one in which the scope is specific to a
given (sub)class.

Am I correct in dimly recalling that Ruby has support for
class-instance variables?



Cheers, 
   Euan
Gawnsoft: http://www.gawnsoft.co.sr
Symbian/Epoc wiki:  http://html.dnsalias.net:1122
Smalltalk links (harvested from comp.lang.smalltalk)  http://html.dnsalias.net/gawnsoft/smalltalk