From: Joel VanderWerf <vjoel@...>
Date: 2002-06-24T07:32:48+09:00
Subject: Re: Mixin using append_features and class<<self do not work together

David Alan Black wrote:

> Also, if you want to include a module in an object's metaclass:
> 
>   module B
>     def foo
>       "foo"
>     end
>   end
> 
>   o = Object.new
>   class << o
>     include B
>   end
> 
>   p o.foo     # "foo"

Or use extend to get the same effect:

  module B
    def foo
      "foo"
    end
  end

  o = Object.new
  o.extend B

  p o.foo     # "foo"