From: "ara.t.howard" <ara.t.howard@...>
Date: 2008-10-23T12:02:29+09:00
Subject: Re: subclass a class in the namespace of the that subclass


On Oct 22, 2008, at 3:53 PM, Trans wrote:

> I know it may seem a bit off the wall. But I want to subclass a class
> that is also defined in the namespace of the subclass. In other words:
>
>  class X < Y
>    class Y
>    end
>  end
>
> Why do I want to do this? Because my library (X) consists of a few
> components, one of them being Y. And I want the end user of the
> library to use it by  typing "X.new". Now, X is all but the same as Y,
> with only with some minor adjustments.
>
> Unfortunately for me there seems to be no way to do this without Ruby
> complaining of a superclass mismatch.


invert:

cfp:~ > cat a.rb
class Y
   def Y.foo() 42 end

   class ::X < Y
     Y = Y
   end
end

p(Y == X::Y)

p X.foo


cfp:~ > ruby a.rb
true
42



a @ http://codeforpeople.com/
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