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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Ada vs Eiffel - Ada programmer approach
Newsgroups: comp.lang.ada
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Date: Tue, 26 May 2009 20:35:31 +0200
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Date: 2009-05-26T20:35:32+02:00
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On Tue, 26 May 2009 18:21:57 GMT, Jeffrey R. Carter wrote:

> Ludovic Brenta wrote:
>> Pascal Obry wrote on comp.lang.ada:
>> 
>>> - multiple inheritance
>> 
>> I'm not sure this is a good thing. In fact, I'm not sure simple
>> inheritance is always a good thing, either. I tend to prefer
>> composition and generics.
> 
> I agree. I never create tagged types, except to obtain finalization. I think the 
> widespread acceptance of programming by extension, even by People Who Should 
> Know Better, represents the triumph of those who emphasize ease of writing over 
> ease of reading.

Tagged type represents just one case in inheritance. When you write

   subtype S is T (<constraint>)

you inherit form T. When you write

   type I is range <>;

you inherit from universal integer, etc.

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