From: Gennady <gfb@...>
Date: 2003-08-12T08:25:14+09:00
Subject: Re: newbie mixin questions

----- Original Message ----- 
From: "Michael Garriss" <mgarriss@earthlink.net>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Monday, August 11, 2003 4:04 PM
Subject: Re: newbie mixin questions


> >
> Thank you for the explanation.  I'm still a bit confused about something
> though:
>
> module Example
>     def method_I_want_to_be_a_class_method
>        # whatever
>     end
>     def mehtod_I_want_to_be_an_instance_method
>        # whatever
>     end
> end
>
> class A
>     include Example
>     class << self
>        include Example
>     end
> end
>
> How do I seperate the class methods from the instance methods in the
> module?  In my above code I'll have one extra unwanted class and one
> extra unwanted instance method.

If you really want to separate them, well, make them separate modules.
From within the module methods you can check what method, class or instance,
is being called:

<untested>
module SomeModule
  def some_method
      if self.class == Class
        puts "some_method: called as a class method"
      else
        puts "some_method: called as an instance method"
      end
  end
end

class A
  class << self
    include SomeMethod
  end
  include SomeMethod
end

A.some_method
   some_method: called as a class method
A.new.some_method
   some_method: called as an instance method
</untested>

Gennady.

>
> Michael
>
>
>