From: "Mark J. Reed" <markjreed@...>
Date: 2003-10-02T23:26:41+09:00
Subject: Re: Instance- and class-variables (was Re: mixing in class methods)

On Thu, Oct 02, 2003 at 11:09:32PM +0900, ts wrote:
>  No, no : there are only 2 categories. 

Yes, I know:  @ and @@.  @ variables are instance variables of an object, and 
classes are really just objects.  But the is-a relationship is special,
and that specialness is echoed in the treatment of @@ variables.

Logically, I still think it would make sense for @@vars to be
equivalent to @vars of the class.  The real problem is that it
would violate encapsulation within the middle-layer implementation -
instances need to be shielded from the innards of their class objects.

-Mark