From: Daniel Berger <djberg96@...>
Date: 2007-10-16T01:49:05+09:00
Subject: Re: RubyTraits 0.1



On Oct 15, 9:38 am, Yukihiro Matsumoto <m...@ruby-lang.org> wrote:
> Hi,
>
> In message "Re: RubyTraits 0.1"
>     on Tue, 16 Oct 2007 00:23:43 +0900, Trans <transf...@gmail.com> writes:
>
> |I see. So you don't really like the fact that modules fit into the
> |inheritance chain? That's interesting.
>
> Actually they both have their own good.  I like them both.  I dislike
> to have them both in a language.  Traits injection is clear and less
> error prone (there's no possibility of conflicts), but sometimes
> method overriding is _very_ useful, where aliasing is very poor way to
> create method combination.
>
> If someone come to the idea to allow modules to have merits from both
> mixins and traits at once (without demerit), I'd love to hear.

I solved this "problem" over two years ago with fine grained mixins.
Please see http://rubyforge.org/docman/view.php/735/309/README.html
and look at the synopsis. Ideas (and code) in that library also came
from Ara Howard and Mauricio Fernandez.

I don't want up front object composition. To me that's like static
typing, except for object composition. At worst, a warning should be
issued if a double inclusion occurs. This is what the 'use' library
does in verbose mode.

Regards,

Dan