From: Robert Klemme <bob.news@...>
Date: 2005-10-06T18:26:51+09:00
Subject: Re: techniques for module to contribute to initialize() of its including classes

itsme213 wrote:
> What are good design techniques for this e.g. if the module adds some
> instance variables to its included class?
>
> module M
>   def f
>     @f
>   end
>   # how to initialize @f ?
> end
>
> class A
>   include M
> end
> Thanks.

Do it like this and the module initialite will seamlessly integrate into
the class inheritance chain:

module M
  def initialize(*a,&b)
    super
    @f = 10
  end
end

There have been discussions about this
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/121611
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/129974

Kind regards

    robert