From: Tobias Reif <tobiasreif@...>
Date: 2001-08-12T06:48:03+09:00
Subject: [ruby-talk:19549] @@variable scope

Hi;

Below is my current understanding of how families of classes share
variables.
I'm sure I got some things completely wrong, and would like to get these
spots pointed out.

Class variables beginning with @@ are shared and scoped among whole
families of classes:
parent classes with descendant classes. If a cousin assigns a new value
to a class variable,
the value changes for it's cousin, ancestor, and descendant classes.
If all objects are of class Object, then
all classes are descendant classes of class Object,
and all objects of all classes share the farthest/oldest ancestor class
Object.
Thus all classes are in the same family
and thus @@ variables would be shared among all objects.

Where am I erring?

Tobi
-- 
Tobias Reif
http://www.pinkjuice.com/myDigitalProfile.xhtml

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