From: Daniel Schierbeck <daniel.schierbeck@...>
Date: 2006-06-12T19:19:10+09:00
Subject: Re: Why the lack of mixing-in support for Class methods?

Gregory Seidman wrote:
> Sure, I understand. And yes, that would fix it. Take a look at the complete
> solution I posted at
> http://redcorundum.blogspot.com/2006/06/mixing-in-class-methods.html

Still think it's rather complicated. Here's what I've got so far, using 
a slightly different approach than you:

   class Module
     def meta_module(&block)
       @meta_module ||= Module.new
       @meta_module.module_eval(&block)
       extend(@meta_module)
     end

     def included(mod)
       mod.extend(@meta_module ||= Module.new)
       if mod.kind_of? Module
         if mod.instance_variables.include? "@meta_module"
           other_meta_module = mod.instance_variable_get(:@meta_module)
           other_meta_module.send(:include, @meta_module)
         else
           mod.instance_variable_set(:@meta_module, @meta_module)
         end
       end
     end
   end

There may still be flaws, but I don't think it's too bad. Notice the use 
of `meta_module' -- thought it was better than `class_methods', though 
I'm not sure it's perfect, either.


Cheers,
Daniel