From: Mauricio Fernandez <mfp@...>
Date: 2006-04-04T06:32:22+09:00
Subject: Re: Setting class variable from parent class?

On Tue, Apr 04, 2006 at 01:08:24AM +0900, dblack@wobblini.net wrote:
> On Tue, 4 Apr 2006, Marco wrote:
> >I'm trying to teach my Parent class how to set variables into its Child
> >class; ie
> 
> The parent and its children share class variables:
> 
> irb(main):001:0> class A; @@var = 2; end
> => 2
> irb(main):002:0> class B < A; @@var; end
> => 2

... depending on the assignment order

class A; end
class B < A; @@cv = 1 end
class A; @@cv = 2 end
class A; @@cv end     # => 2
class B; @@cv end     # => 1 # !> class variable @@cv of A is overridden by B

-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby