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From: paj@mrcu (Paul Johnson)
Newsgroups: comp.object
Subject: Re: Examples of Multiple Inheritance?
Message-ID: <743@puck.mrcu>
Date: 10 Dec 90 09:14:30 GMT
References: <60700005@inmet> <980@culhua.prg.ox.ac.uk> <17562@neptune.inf.ethz.ch>
Reply-To: paj@uk.co.gec-mrc (Paul Johnson)
Organization: GEC-Marconi Research Centre, Great Baddow, UK
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I think that this debate is missing the point.  Neither MI or SI make
simple examples easier to code.  If you have fully analysed your
problem and know what routines are to be called where then you can
code in Pascal or C just as easily.  The point about inheritance and
polymorphism is that they contribute to code flexibility and reuse.
When the requirements change (as they always do) then a well designed
OO program is far superior because the existing abstract classes (what
Meyer terms "deferred" classes) from which the actual classes inherit
become the basis for new classes.  MI allows the designer to increase
the number of abstract classes in the system and thereby increases the
flexibility of the system.

Paul.

-- 
Paul Johnson                               UUCP: <world>!mcvax!ukc!gec-mrc!paj
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