From: matz@... (Yukihiro Matsumoto)
Date: 2000-06-24T03:49:28+09:00
Subject: [ruby-talk:03642] Re: Interface polymorphism

Hi,

In message "[ruby-talk:03641] Re: Interface polymorphism"
    on 00/06/23, hal9000@hypermetrics.com <hal9000@hypermetrics.com> writes:

|Can we truly say, then, that Ruby does not support multiple inheritance?
|Why do we have modules instead of ordinary MI? (I did read your article
|in InformIT.)

Well, if you like, you can say that Ruby has restricted MI.  But I'd
call it `SI with implementation sharing'.  That's a matter of point of
view.

The reason of this restriction is my belief that MI is too complicated
of human mind, well, at least for MY mind.  And educational reason
too.  I wanted to proselyte the principle of Mix-in, which is
applicable to any MI language.  Ruby certainly is a pragmatic
language, not an educational language in general, except this point.

							matz.