From: Rob Biedenharn <Rob@...>
Date: 2009-01-12T05:42:34+09:00
Subject: Re: Constant lookup when using namespaces


On Jan 11, 2009, at 3:34 PM, nemlet@gmail.com wrote:

> Here is an example.
>
> #!/usr/bin/ruby
>
> class A
>
> end
>
> class A
    class B
>
>  def method_one
>    x = C.new
>    puts x.blah
>  end

   end
>
>
> end
>
> class A
   class C
>
>  def blah
>    puts "I want this one"
>  end
   end
>
> end
>
> class C
>
>  def blah
>    puts "this is the wrong one"
>  end
>
> end
>
> ab = A::B.new
> ab.method_one
>
>
>
>
> As you can see when you run it you get the blah out of ::C NOT A::C
> which I was expecting. Is there a way to be able to say C.new inside
> of A::B and have it check the A:: Namespace first?

I don't remember the details of "why", but "class A::C; end" opens the  
A:: scope differently from "class A; class C; end; end".  When you  
make the "class A" namespace explicit, you get the behavior you were  
expecting.

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob@AgileConsultingLLC.com