From: Daniel Schierbeck <daniel.schierbeck@...>
Date: 2006-06-15T17:46:39+09:00
Subject: Re: Why the lack of mixing-in support for Class methods?

Okay, I've sorted out a few of the problems, and I hope I haven't 
created new ones.

   1 class Module
   2   def class_extension(&block)
   3     @class_extension ||= Module.new
   4     @class_extension.module_eval(&block)
   5   end
   6
   7   def included(mod)
   8     if not @class_extension.nil?
   9       case mod
  10       when Class
  11         mod.extend(@class_extension)
  12       when Module
  13         unless mod.instance_variables.include? "@class_extension"
  14           mod.instance_variable_set(:@class_extension, Module.new)
  15         end
  16         other = mod.instance_variable_get(:@class_extension)
  17         other.send(:include, @class_extension)
  18       end
  19     end
  20   end
  21 end


Please report any errors here, sans bashing.


Daniel