From: Rick DeNatale <rick.denatale@...>
Date: 2007-10-10T06:00:25+09:00
Subject: Re: Simple metaclass question

On 10/9/07, MenTaLguY <mental@rydia.net> wrote:
> On Wed, 10 Oct 2007 04:46:37 +0900, bob zee <nlakkakula@gmail.com> wrote:
> > Why last k.hello  is  "Hello from Klass" Not "Hello from Mod"? After
> > Klass mixin with Mod, I am extending k object to include Mod so k's
> > metaclass methods now point to Mod methods.. right? they should get
> > called first before Klass instance methods if I am thinking right.
>
> Ruby inheritance is linearized so that each module only appears once.
> Since Mod is already present in k's class ancestry, adding it again
> has no effect.

For a while, about a year ago, Ruby 1.9 had changed the semantics of
re-inclusion:
http://talklikeaduck.denhaven2.com/articles/2006/10/09/a-subtle-change-to-mixin-semantics-in-ruby-1-9

But as far as I know it's now back to the 1.8 definition.

I still don't understand why since it seems unnatural to me.

-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/