From: matz@... (Yukihiro Matsumoto)
Date: 2000-12-15T11:43:35+09:00
Subject: [ruby-talk:7273] Re: Multiple inheritance and mixins

Hi,

In message "[ruby-talk:7252] Multiple inheritance and mixins"
    on 00/12/15, Adam Spitz <adamspitz@home.com> writes:

|I'm having trouble understanding the difference between Ruby's mixins
|and "ordinary" multiple inheritance. Can someone explain to me how
|mixins are different from, say, C++'s version of multiple inheritance?
|Which of C++'s problems has Ruby avoided? Is there anything you can do
|with multiple inheritance that you can't do with mixins?

Mix-in is a restricted MI.  You can't have shared superclass like

     A
    / \
   B   C
    \ /
     D

which often cause problems.  Since mix-in is a subset, you can do
mix-in by MI, of course.

							matz.