From: Christoph <swap@...> (news_chr)
Date: 2003-12-07T21:42:18+09:00
Subject: Re: Attempted roadmap of future instance variables....

Jesse Tov wrote
....
>   2. A
> It doesn't add anything new, since :: already exists for similar things.
> It's lightweight and non-restrictive, and seems to blend into the
> language pretty well to me.  Here's an example:
>
>     class A
>       def a=(x)
>         @foo = x
>       end
>     end
>
>     class B < A
>       def b=(x)
>         @foo = x
>       end
>     end
>
>     class C < B
>       def c=(x)
>         @foo = x
>       end
>
>       def c;
>         @foo
>       end
>
>       def b;
>         @::foo    # could also be @B::foo
>       end
>
>       def a
>         @A::foo
>       end
>     end
>
>     c = C.new
>     c.a = 1
>     c.b = 2
>     c.c = 3
>
>     puts(c.a, c.b, c.c)   ==> 1, 2, 3

If we go that route we might as well introduce this
(possibly instead) for methods too (there was some
demand for this kind appility in connection with mixins)

class A
    def foo
        p "A"
    end
end
class B <A
end
class C < B
    def foo
        A::foo
    end
end


C.new.foo  # "A"

/Christoph