From: gabriele renzi <surrender_it@...1.vip.ukl.yahoo.com>
Date: 2004-01-18T09:25:03+09:00
Subject: Re: [HELP] : ruby and the class variables

il Sat, 17 Jan 2004 23:10:00 +0100, "smayemba" <aidez.moi@free.fr> ha
scritto::

>Hi all,
>
>how can i use the class variables in ruby like in Java :

beware, someone may flame you, this are static variables not class
ones.

>class A
>{
>    public static foo;
>}
>
>class B
>{
>    public static bar = A.foo; //A.foo is what i am looking for to do.
>}
>
>Thanks for all

ruby has class variables, like this:
>> class A
>>  @@v=10
>>  def self.v
>>   @@v
>>  end
>> end
=> nil
>> A.v
=> 10

but these are shared with subclasses. You may use instance variables
of Class objects like this:

>> class A
>>  class << self
>>   attr_accessor :v
>>  end
>> end
=> nil
>> A.v=20
=> 20
>> A.v
=> 20