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From: olehjalmar kristensen - Sun Microsystems - Trondheim Norway
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Newsgroups: comp.lang.ada
Subject: Re: Is the Writing on the Wall for Ada?
Date: 09 Sep 2003 09:34:29 +0200
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>>>>> "HR" == Hyman Rosen <hyrosen@mail.com> writes:

    HR> Robert C. Leif wrote:
    >> In particular adding interfaces to Ada allows derived types
    >> where the type inherits one parent type and adds one or more interfaces.

    HR> Thereby exhibiting the simple lack of courage to add multiple
    HR> inheritance. Why should we limit to inheriting from one type?
    HR> What is it about one that makes it better than two or more?

Beats me. In fact, one of the *nice* things about the C++ multiple
inheritance is that it allows me to express roles (a la Reenskaug) and
then combine different roles in the same object without jumping
through hoops. In Smalltalk you need an extra tool to do this, in C++
all you need is a little care. I suppose it *could* be done in Ada
with generics, but I have not tried it, and it would certainly be more
obfuscated.