From: Christoph <chr_news@...>
Date: 2002-03-03T09:48:44+09:00
Subject: Re: class vars broken in 1.6.7

"Joel VanderWerf" <vjoel@PATH.Berkeley.EDU> wrote in
....
>
> ..and the following prints "0":
>
> class C
>   @@cv = 0
>   class << self
>     def test
>       @@cv = 5
>       p @@cv
>     end
>   end
>
>   test
> end

Hm my previous response was probably a bit hasty - the current behavior
clearly is a problem and ``meta-class'' variables don't seem to work either -
I was hoping for something simple like
----
class C
    @@cv = 0
    class << self
        @@cv = 5
        def  test
            @@cv = 5
        end
    end
    def test; @@cv end
end

class D < C; end

D.new.test # => 0
D.test        # => 5
----

To elaborate on your bug a little bit further - right now
in the main branch we got

----
class Class
  #  @@cv = 'test'
end

class C
    @@cv = 0
    p @@cv
    class << self
       @@cv = 'bmeta'
       @@cv = 'meta'
       p @@cv
       class << self
        p  @@cv
        @@cv = 'meta2'
        p @@cv
       end
    end
end
----
0
0
'meta'
'meta'
----

versus

----
class Class
    @@cv = 'test'
end

class C
    @@cv = 0
    p @@cv
    class << self
       @@cv = 'bmeta'
       @@cv = 'meta'
       p @@cv
       class << self
        p  @@cv
        @@cv = 'meta2'
        p @@cv
       end
    end
end
----
0
0
'meta'
'meta2'
----

which is all pretty weird  ...


/Christoph