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Message-Id: <25875118.D6KecKHI6J@linux1.krischik.com>
From: Martin Krischik <martin@krischik.com>
Subject: Re: Teaching new tricks to an old dog (C++ -->Ada)
Newsgroups: comp.lang.ada,comp.lang.c++,comp.realtime,comp.software-eng
Reply-To: martin@krischik.com
Date: Thu, 24 Mar 2005 11:47:10 +0100
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Xref: g2news1.google.com comp.lang.ada:9896 comp.lang.c++:47039
 comp.realtime:1676 comp.software-eng:5281
Date: 2005-03-24T11:47:10+01:00
List-Id: <comp.lang.ada>

Hyman Rosen wrote:

> adaworks@sbcglobal.net wrote:
>> I wish Ada had a good model of multiple inheritance.
>  > I don't mean the somewhat haphazard model of C++
> 
> What's wrong with C++'s model?

As allways: the default behaviour. Default is static inheritance.

Take the following example:

class X : public A, public B { };

This causes a problem when you have 

class A: public C {};

class B public C {};

Of couse C++ has a perfectly good solution:

class A: virtual public C {};

class B virtual public C {};

All very well, only I know C++ programmers which had 2 to 7+ years
experience in C++ and did not know about it until I told them. And not just
one programmer: the whole team of about 20!

Side note: This puts all the "good programmers do than/don't do that"
arguments into an instersting new light: In this case only 1 in 20 of the
C++ programmers realy knew his trade and that one is now an Ada
advocate ;-) .

Martin
-- 
mailto://krischik@users.sourceforge.net
Ada programming at: http://ada.krischik.com