From: "QUEISSER,ANDREW (HP-Corvallis,ex1)" <andrew_queisser@...>
Date: 2002-04-04T01:59:04+09:00
Subject: RE: Mixins vs. Multiple Inheritance

My experience with MI in C++ is that 99% of the time I
use it as mixin, meaning that the same thing could be
accomplished in Ruby or, to a lesser degree, in Java.

Also keep in mind that you need MI in statically typed
languages like C++ where mixin or similar does the job
in dynamically or untyped (or whatever we call it)
languages like Ruby. Where I need to inherit a base
class in C++ it may be enough to add a couple of methods
to a Ruby class.

Andrew


> -----Original Message-----
> From: Bob Hutchison [mailto:hutch@recursive.ca]
> Sent: Wednesday, April 03, 2002 8:19 AM
> To: ruby-talk@ruby-lang.org
> Subject: Re: Mixins vs. Multiple Inheritance
> 
> 
> 
> That's it? That's good to hear! This is basically what I've 
> come to assume
> recently, but every now and again I get a twinge of a 
> what-am-I-missing kind
> of feeling.
> 
> Thanks,
> Bob
> 
> On 4/3/02 10:52 AM, "Yukihiro Matsumoto" <matz@ruby-lang.org> wrote:
> 
> > Hi,
> > 
> > In message "Re: Mixins vs. Multiple Inheritance"
> >   on 02/04/03, Bob Hutchison <hutch@xampl.com> writes:
> > 
> > |Is there someplace that outlines what you can do with 
> multiple inheritance
> > |but not mix-ins? I've wondered this many times myself, and 
> I suspect the
> > |original question could be answered with that outline.
> > 
> > You can't inherit from two (or more) concrete classes by mix-in.
> > 
> > matz.
>