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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Teaching new tricks to an old dog (C++ -->Ada)
Newsgroups: comp.lang.ada,comp.lang.c++,comp.realtime,comp.software-eng
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Date: Thu, 24 Mar 2005 08:24:04 +0100
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Date: 2005-03-24T08:24:00+01:00
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On Wed, 23 Mar 2005 21:42:58 -0500, Wes Groleau wrote:

> adaworks@sbcglobal.net wrote:
>> There are lots of good uses for multiple inheritance.  However,
>> there are also lots of dangers in it.  Ada correctly comes down
>> on the side of safety, but I do sometimes wish it were available.
> 
> One thing I've never quite understood is the argument of ambiguity.
> Ada allows other things that have a potential of ambiguity.  The
> solution there is that when something _actually_ has two meanings
> (as opposed to _potentially_) then you get neither.

Of course it not an argument. A real argument I think is view conversions,
they would be impossible to do without a distributed overhead (as it takes
place in C++.) I think that MI from concrete types should be allowed, later
when Ada will have "tagged" by-value types without tags carved on the
object. For those one could allow full MI, for others only multiple
interfaces but single implementation inheritance (as in Ada 2005.)

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de