From: Sean O'Halpin <sean.ohalpin@...>
Date: 2007-11-21T07:17:02+09:00
Subject: Re: Where's A?

On Nov 20, 2007 1:53 PM, Trans <transfire@gmail.com> wrote:
> This doesn't seem right to me:
>
> irb(main):001:0> module X
> irb(main):002:1>   module A; end
> irb(main):003:1> end
> => nil
> irb(main):004:0> class Q
> irb(main):005:1>   include X
> irb(main):006:1>   p A
> irb(main):007:1>   class Y
> irb(main):008:2>     class Z < A
> irb(main):009:3>     end
> irb(main):010:2>   end
> irb(main):011:1> end
> X::A
> NameError: uninitialized constant Q::Y::A
>         from (irb):8
>
> If I recall correctly, 1.9 has some changes to constant lookup rules.
> Is the above fixed in 1.9?
>
> Thanks,
> T.
>
Hi Trans,

I'm not sure I understand what you expect. In the following example:

class A
end

module Outer
  module X
    class A # you meant 'class' didn't you? ;)
    end
  end

  class A
  end

  class Q
    include X
    class Y
      p A
      class Z < A   # which A do you want?
      end
      # this seems reasonable to me...
      class XZ < X::A
      end
    end
  end
end

which A should Z be a subclass of?

Regards,
Sean