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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: limited types (Was: Records that could be arrays)
Newsgroups: comp.lang.ada
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Date: Tue, 28 Feb 2006 10:39:20 +0100
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Date: 2006-02-28T10:39:20+01:00
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On 27 Feb 2006 15:00:29 -0800, Matthew Heaney wrote:

> Dmitry A. Kazakov wrote:
>>
>> I don't see how a constraint imposed on elements can propagate to the
>> cursor.
> 
> generic
>   type ET is private;
>   type Cursor is private;
> 
>   with function E (C : Cursor) return ET is <>;
>   ...
> procedure Generic_Algorithm (C1, C2 : CT);

Instantiate Generic_Algorithm with some T and CT. Then put a constraint on
T, that will be a subtype S or a derived type. Now how to get CS from CT?

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