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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Is this expected behavior or not
Date: Thu, 11 Apr 2013 17:07:16 +0200
Organization: cbb software GmbH
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Date: 2013-04-11T17:07:16+02:00
List-Id: <comp.lang.ada>

On Thu, 11 Apr 2013 15:49:03 +0200, J-P. Rosen wrote:

> Le 11/04/2013 09:59, Dmitry A. Kazakov a �crit :
>> type Complex is new Real with record
>>    Img : Float;
>> end record;
>> 
>> How is the compiler supposed to inherit "+"?
> 
> The problem is not in the language. It is a wrong modelling, since a
> complex is not a specialisation of a real.

Type extension is not specialization either.

Specialization in Ada is more or less covered by subtypes. [Type extension
is Cartesian product.]

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