From: List Recv <listrecv@...>
Date: 2005-12-21T23:22:38+09:00
Subject: Re: Help with object scope

I see.

So,
1) How do I call C from class TestM without explicitly using its 
namespace (M:C)?  Is there no way?  I don't want to modify Kernel or 
anything, just have class C available.

2) Could you explain exactly what a Module is?  A namespace? A set of 
methods without a home?  I'm really confused... (I know that 
module_define and class_define are synonomous, which is even more 
confusing...)


Daniel Sheppard wrote:
> module M
>   class C
>    def self.blah
>    end
>   end
> end
> 
> module M2
>   include M
>   class TestM
>     def setup; C.blah; end
>   end
> end
> 
> Won't work because the C tries to refer to TestM::C, which doesn't
> exist.
> 
> Previously, when you did an "include M" you included the module into
> Kernel.
> 
> Since:
> 	TestM is an instance of Class
> 	Class is an instance of Object
> 	You've included M in Object, causing Object::C to be created
> 
> So, in that case TestM::C exists.
> 
>> I had a file, in short:
>> end
>> 
>> Works great.
>> 
>> *However*, if I wrap the unit tests in their own module, then 
>> ruby can 
>> no longer find class C.  Why?  Didn't I include module M?  I'm really 
>> confused here.
>> 
>> If you want the full source, I can post it.
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