From: Hyman Rosen <hyrosen@mail.com>
Subject: Re: Question about OO programming in Ada
Date: Wed, 03 Dec 2003 15:57:29 -0500
Date: 2003-12-03T15:57:29-05:00 [thread overview]
Message-ID: <1070485049.881772@master.nyc.kbcfp.com> (raw)
In-Reply-To: <vssgjnn6ppn887@corp.supernews.com>
Randy Brukardt wrote:
> Finalize should handle tasks for the components, not the object itself. So,
> it is possible (and common) to call U_D on components of the object
> (presuming that you have a way to check that it hasn't already been done, a
> requirement of all Finalize routines). But you never do memory allocation on
> the top-level object.
That's not true. In C++, it's not uncommon for objects to have
delete this;
in their destructors. The technique is used for objects which
manage their own lifetimes, and know when it's time to go.
Reference counted objects are an example of this - the count
is decremented in the destructor, and if it reaches zero, the
object deletes itself. No muss, no fuss.
The technique does require that a destructor will be called
exactly once for an object. C++ guarantees this, Ada does not.
next prev parent reply other threads:[~2003-12-03 20:57 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-25 19:04 Question about OO programming in Ada Ekkehard Morgenstern
2003-11-25 20:17 ` Randy Brukardt
2003-11-26 0:34 ` Ekkehard Morgenstern
2003-11-26 6:17 ` Vinzent 'Gadget' Hoefler
2003-11-26 9:29 ` Dmitry A. Kazakov
2003-11-26 15:54 ` Stephen Leake
2003-11-26 20:07 ` Randy Brukardt
2003-11-26 21:36 ` Stephen Leake
2003-11-26 8:56 ` Peter Hermann
2003-11-25 20:55 ` Martin Krischik
2003-11-26 0:22 ` Ekkehard Morgenstern
2003-11-26 1:00 ` Jeffrey Carter
2003-11-26 16:36 ` Martin Krischik
2003-11-26 18:09 ` Robert I. Eachus
2003-11-27 13:45 ` Jean-Pierre Rosen
2003-11-25 21:48 ` Stephen Leake
2003-11-26 0:01 ` Ekkehard Morgenstern
2003-11-26 1:16 ` Jeffrey Carter
2003-11-26 15:10 ` Georg Bauhaus
2003-11-26 15:48 ` Stephen Leake
2003-11-26 16:24 ` Hyman Rosen
2003-11-26 17:58 ` Robert I. Eachus
2003-11-27 2:10 ` Ekkehard Morgenstern
2003-11-27 10:15 ` Ludovic Brenta
2003-11-27 18:35 ` Jeffrey Carter
2003-11-28 4:35 ` Hyman Rosen
2003-11-28 7:28 ` Vinzent 'Gadget' Hoefler
2003-11-28 8:46 ` Dale Stanbrough
2003-11-28 10:16 ` Vinzent 'Gadget' Hoefler
2003-12-01 15:57 ` Martin Krischik
2003-12-01 16:47 ` Hyman Rosen
2003-12-03 18:35 ` Martin Krischik
2003-12-01 21:13 ` Jeffrey Carter
2003-12-02 8:47 ` Dmitry A. Kazakov
2003-12-03 9:29 ` Pascal Obry
2003-12-03 11:26 ` Dmitry A. Kazakov
2003-12-03 12:49 ` Ludovic Brenta
2003-12-03 13:41 ` Dmitry A. Kazakov
2003-12-03 14:11 ` Ludovic Brenta
2003-12-03 14:45 ` Dmitry A. Kazakov
2003-12-03 15:44 ` Hyman Rosen
2003-12-03 16:11 ` Dmitry A. Kazakov
2003-12-03 18:20 ` David C. Hoos
[not found] ` <28eb01c3b9ca$25b18870$b101a8c0@sy.com>
2003-12-03 18:35 ` Hyman Rosen
2003-12-03 20:05 ` Randy Brukardt
2003-12-03 20:57 ` Hyman Rosen [this message]
2003-12-03 21:16 ` Hyman Rosen
2003-12-03 22:04 ` Pascal Obry
2003-12-03 22:34 ` Hyman Rosen
2003-12-04 1:23 ` Robert I. Eachus
2003-12-04 7:15 ` Hyman Rosen
2003-12-04 17:43 ` Warren W. Gay VE3WWG
2003-12-04 8:55 ` Dmitry A. Kazakov
2003-12-04 19:13 ` Randy Brukardt
2003-12-04 19:29 ` Hyman Rosen
2003-12-04 21:32 ` Robert I. Eachus
2003-12-05 8:43 ` Dmitry A. Kazakov
2003-11-27 22:12 ` Robert I. Eachus
2003-11-28 6:37 ` Simon Wright
2003-11-30 2:51 ` Robert I. Eachus
2003-12-06 7:48 ` Chad Bremmon
2003-12-06 13:33 ` Jeff C,
2003-12-06 22:44 ` Hyman Rosen
2003-12-07 3:02 ` Chad Bremmon
2003-12-07 7:53 ` Hyman Rosen
2003-12-07 15:34 ` James Rogers
2003-12-07 18:30 ` Martin Krischik
2003-12-07 20:25 ` James Rogers
2003-12-08 3:36 ` Hyman Rosen
2003-12-08 4:42 ` Chad Bremmon
2003-12-08 8:42 ` Hyman Rosen
2003-12-08 9:34 ` Dmitry A. Kazakov
2003-12-08 13:25 ` Hyman Rosen
2003-12-08 15:05 ` Dmitry A. Kazakov
2003-12-09 4:38 ` Hyman Rosen
2003-12-09 8:19 ` Dmitry A. Kazakov
2003-12-09 13:29 ` Hyman Rosen
2003-12-09 14:36 ` Dmitry A. Kazakov
2003-12-09 15:05 ` Hyman Rosen
2003-12-09 15:59 ` Dmitry A. Kazakov
2003-12-09 16:41 ` Hyman Rosen
2003-12-10 11:32 ` Dmitry A. Kazakov
2003-12-10 15:27 ` Hyman Rosen
2003-12-10 17:15 ` Dmitry A. Kazakov
2003-12-08 17:55 ` Chad Bremmon
2003-12-08 23:09 ` Hyman Rosen
2003-12-09 8:26 ` Dmitry A. Kazakov
2003-12-08 19:33 ` Martin Krischik
2003-12-09 4:41 ` Hyman Rosen
2003-12-08 17:27 ` Chad Bremmon
2003-12-08 18:44 ` Georg Bauhaus
2003-12-08 19:27 ` Martin Krischik
2003-12-08 19:36 ` Chad Bremmon
2003-12-09 4:43 ` Hyman Rosen
2003-12-08 23:23 ` Hyman Rosen
2003-12-08 19:25 ` Martin Krischik
2003-12-07 21:29 ` Peter C. Chapin
2003-12-08 3:44 ` Hyman Rosen
2003-12-08 3:46 ` Hyman Rosen
2003-12-08 5:54 ` James Rogers
2003-12-08 8:45 ` Hyman Rosen
2003-12-07 17:39 ` Chad Bremmon
2003-12-08 23:39 ` Hyman Rosen
2003-12-09 2:36 ` Chad Bremmon
2003-12-09 4:52 ` Hyman Rosen
2003-12-09 11:24 ` Georg Bauhaus
2003-12-09 18:42 ` Chad Bremmon
2003-12-09 20:11 ` Hyman Rosen
2003-12-08 23:40 ` Hyman Rosen
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