From: Joel VanderWerf <vjoel@...>
Date: 2004-09-15T07:34:31+09:00
Subject: Re: Modules as namespaces

Sam Stephenson wrote:
> On Wed, 15 Sep 2004 06:34:01 +0900, Joel VanderWerf
> <vjoel@path.berkeley.edu> wrote:
> 
>>You need to make foo a module method of B:
>>| module A
>>|   module B
>>         def B::foo; @foo; end
>>|   end
>>| end
>>The way you had it originally, you were defining an _instance_ method of
>>B. If you had included B in some class, you could then call foo as an
>>method of instances of that class.
> 
> 
> Okay, I see. But now Foo#bar gives nil.
> 
> So mixing in a module doesn't mix-in other modules "inside it" in the same way?

Nope. The namespace containment hierarchy is different from the 
inheritance hierarchy.