From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: generic question
Date: Tue, 21 Nov 2006 19:28:59 +0100
Date: 2006-11-21T19:28:52+01:00 [thread overview]
Message-ID: <1lr3i83ic7wmh$.105uxx10skg03.dlg@40tude.net> (raw)
In-Reply-To: 1164132941.922931.274660@e3g2000cwe.googlegroups.com
On 21 Nov 2006 10:15:42 -0800, Matthew Heaney wrote:
> So that conversions towards the root of a tagged type hierarchy don't
> require explicit type conversions.
True, but it is only because there is no subtypes of access types like:
type T is tagged ...;
type T_Ptr is access T'Class;
type S is new T with ...;
subtype S_Ptr is T_Ptr in S'Class;
In the present design three uncorrelated things are bundled together in
anonymous access types:
1. subtypes hierarchy inherited from the target types hierarchy
2. general pool
3. controlledness in primitive subprograms
In Ada 95 it was even four:
4. not null
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2006-11-21 18:28 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-19 18:03 generic question markww
2006-11-19 19:17 ` Ludovic Brenta
2006-11-19 19:23 ` Stefan Bellon
2006-11-19 20:16 ` markww
2006-11-19 22:07 ` Pascal Obry
2006-11-20 10:35 ` Alex R. Mosteo
2006-11-20 17:03 ` Pascal Obry
2006-11-20 18:10 ` Alex R. Mosteo
2006-11-20 21:16 ` markww
2006-11-20 21:40 ` Matthew Heaney
2006-11-20 21:50 ` Matthew Heaney
2006-11-21 7:04 ` Pascal Obry
2006-11-21 8:25 ` Alex R. Mosteo
2006-11-21 14:25 ` Matthew Heaney
2006-11-21 15:47 ` Matthew Heaney
2006-11-21 17:14 ` Pascal Obry
2006-11-21 18:15 ` Matthew Heaney
2006-11-21 18:28 ` Dmitry A. Kazakov [this message]
2006-11-21 14:21 ` Matthew Heaney
2006-11-21 17:12 ` Pascal Obry
2006-11-21 17:25 ` Lutz Donnerhacke
2006-11-21 17:35 ` Alex R. Mosteo
2006-11-21 18:18 ` Matthew Heaney
2006-11-22 23:58 ` Randy Brukardt
2006-11-23 8:32 ` Dmitry A. Kazakov
2006-11-28 21:23 ` Randy Brukardt
2006-11-29 15:57 ` Matthew Heaney
2006-11-21 18:14 ` Matthew Heaney
2006-11-23 0:02 ` Randy Brukardt
2006-11-21 18:17 ` Dmitry A. Kazakov
2006-11-21 18:32 ` Matthew Heaney
2006-11-19 20:24 ` Jeffrey R. Carter
2006-11-19 20:33 ` markww
2006-11-20 17:31 ` Adam Beneschan
2006-11-21 16:22 ` Matthew Heaney
-- strict thread matches above, loose matches on Subject: below --
2003-11-23 20:59 shoko
2003-11-23 21:41 ` Marius Amado Alves
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