From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Ada 'hello world' for Android; success!
Date: Tue, 1 Nov 2011 10:52:08 +0100
Date: 2011-11-01T10:52:08+01:00 [thread overview]
Message-ID: <4s9hvvnvd44l$.pzu8zi1ndkkp.dlg@40tude.net> (raw)
In-Reply-To: 82mxciogt0.fsf@stephe-leake.org
On Sun, 30 Oct 2011 07:32:59 -0400, Stephen Leake wrote:
> In brief, _any_ framework that uses dispatching on class-wide
> objects needs reference semantics.
Wrong. Reference semantics is required to maintain object's identity.
Without identity there is no need in it. This is unrelated to being
class-wide which requires *type identity* rather than the object's one. You
could have any combination of those two. One of the key advantages of Ada's
OO model is that it decouples them.
> In Ada, that is indicated by the explicit word 'access'.
Possibly yes, though tagged types are by-reference anyway. Actually
"limited" is the indicator for object's identity. What about freshly
introduced by Ada 2012 "aliased"?
BTW, Consider an architecture where the object address may change, while
keeping its identity. Thin pointers won't work for such "wandering"
objects...
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2011-11-01 9:53 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-27 1:18 Ada 'hello world' for Android; success! Stephen Leake
2011-10-27 7:12 ` Alex R. Mosteo
2011-10-28 12:51 ` Stephen Leake
2011-10-27 10:50 ` Jeffrey Creem
2011-10-28 13:01 ` Stephen Leake
2011-10-27 10:58 ` Brian Drummond
2011-10-28 1:37 ` Shark8
2011-10-28 12:22 ` Anatoly Chernyshev
2011-10-29 13:37 ` Stephen Leake
2011-10-29 14:46 ` Anatoly Chernyshev
2011-10-29 20:47 ` Brad Moore
2011-10-29 21:59 ` Anatoly Chernyshev
2011-10-30 3:51 ` Brad Moore
2011-10-30 7:20 ` Anatoly Chernyshev
2011-10-30 10:56 ` Stephen Leake
2011-10-30 17:32 ` Brad Moore
2011-10-29 15:32 ` Georg Bauhaus
2011-10-29 16:09 ` Simon Wright
2011-10-29 17:32 ` tmoran
2011-10-30 11:38 ` Stephen Leake
2011-10-29 20:51 ` Brad Moore
2011-10-30 11:32 ` Stephen Leake
2011-10-31 22:34 ` Randy Brukardt
2011-11-01 8:41 ` Stephen Leake
2011-11-01 9:30 ` Georg Bauhaus
2011-11-02 15:55 ` Stephen Leake
2011-11-02 17:37 ` Robert A Duff
2011-11-08 3:56 ` Randy Brukardt
2011-11-03 0:37 ` Georg Bauhaus
2011-11-03 11:36 ` Stephen Leake
2011-11-03 15:24 ` Robert A Duff
2011-11-03 18:43 ` Pascal Obry
2011-11-03 22:14 ` Georg Bauhaus
2011-11-04 8:48 ` Dmitry A. Kazakov
2011-11-04 12:18 ` Stephen Leake
2011-11-04 15:03 ` Georg Bauhaus
2011-11-05 16:56 ` Stephen Leake
2011-11-01 9:52 ` Dmitry A. Kazakov [this message]
2011-11-02 15:59 ` Stephen Leake
2011-11-02 16:27 ` Dmitry A. Kazakov
2011-11-02 17:38 ` Simon Wright
2011-11-10 17:25 ` Stephen Leake
2011-11-27 15:18 ` mockturtle
2011-11-28 22:35 ` Ada 'hello world' for Android; success! (but music player failure) Stephen Leake
2011-11-29 11:23 ` Georg Bauhaus
2011-11-30 3:33 ` Stephen Leake
2011-11-30 18:57 ` Georg Bauhaus
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