From: Thomas Link <samul@...>
Date: 2004-03-18T17:19:33+09:00
Subject: Question about unexpected result with class variables and inheritance

Let's consider the following code:

class A
    @@x = 1
    def A.x
        return @@x
    end
end

class B < A
    @@x = 2
end

class C < A
    @@x = 3
end

> p A.x
3
> p B.x
3
> p C.x
3

Why do A.x, B.x, and C.x all return 3? The results I would have expected 
are: 1, 2, 3. Is this supposed to be this way? Is there a way to get the 
results, I expected? Is this a FAQ issue? Did I get it all wrong? BTW, I 
use ruby 1.8.1 (2003-12-25) [i386-cygwin].

Regards,
Thomas.