From: "J-P. Rosen" <rosen@adalog.fr>
Subject: Re: Why is the destructor called multiple times after I declare an object?
Date: Wed, 13 Jan 2016 15:45:55 +0100
Date: 2016-01-13T15:45:55+01:00 [thread overview]
Message-ID: <n75nq4$aae$1@dont-email.me> (raw)
In-Reply-To: <n75214$1ata$1@gioia.aioe.org>
Le 13/01/2016 09:31, Dmitry A. Kazakov a écrit :
> On 13/01/2016 01:02, Robert A Duff wrote:
>> "In place" means that the returned object created by the return
>> statement that actually returns is the same object as the one at the
>> call site.
>
> It is rather a useless definition, because it would apply to the objects
> returned by-copy as well. At some point *some* object created as a
> result of a call to the callee becomes the object of the caller.
>
OK, let's state it differently. The called function builds its result
"somewhere". That "somewhere" is what will be used by the caller as the
variable being initialized.
It is perfectly OK if the function starts building the result in
"somewhere_1", then decides to switch to "somewhere_2", as long as the
eventual "somewhere" is what is used by the caller, /without copy/.
--
J-P. Rosen
Adalog
2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX
Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00
http://www.adalog.fr
next prev parent reply other threads:[~2016-01-13 14:45 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-11 1:37 Why is the destructor called multiple times after I declare an object? Andrew Shvets
2016-01-11 2:18 ` Jeffrey R. Carter
2016-01-11 3:35 ` Andrew Shvets
2016-01-11 17:02 ` Brian Drummond
2016-01-11 16:29 ` Brian Drummond
2016-01-11 17:20 ` Simon Wright
2016-01-11 18:17 ` Bob Duff
2016-01-11 21:10 ` Dmitry A. Kazakov
2016-01-11 23:44 ` Randy Brukardt
2016-01-12 9:33 ` Dmitry A. Kazakov
2016-01-12 20:21 ` Randy Brukardt
2016-01-12 21:05 ` Dmitry A. Kazakov
2016-01-13 0:02 ` Robert A Duff
2016-01-13 8:31 ` Dmitry A. Kazakov
2016-01-13 9:01 ` Georg Bauhaus
2016-01-13 14:45 ` J-P. Rosen [this message]
2016-01-13 20:09 ` Dmitry A. Kazakov
2016-01-14 9:04 ` J-P. Rosen
2016-01-14 9:47 ` Dmitry A. Kazakov
2016-01-13 16:03 ` Robert A Duff
2016-01-13 19:59 ` Dmitry A. Kazakov
2016-01-14 10:04 ` Georg Bauhaus
2016-01-14 13:42 ` Dmitry A. Kazakov
2016-01-12 12:41 ` Brian Drummond
2016-01-13 20:18 ` Jacob Sparre Andersen
2016-01-14 1:31 ` Robert A Duff
2016-01-12 0:43 ` Jeffrey R. Carter
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