From: Martin Krischik <krischik@users.sourceforge.net>
Subject: Re: tagged record child: override constructor?
Date: Wed, 14 Sep 2005 18:10:13 +0200
Date: 2005-09-14T18:10:13+02:00 [thread overview]
Message-ID: <4763607.ynpINh8cNq@linux1.krischik.com> (raw)
In-Reply-To: 87vf14him5.fsf@ludovic-brenta.org
Ludovic Brenta wrote:
> Martin Krischik <krischik@users.sourceforge.net> writes:
>> That's because all class members are virtual in Ada.
>
> I think this needs to be elaborated on.
>
> All _primitive operations of a tagged type_ are _potentially_
> "virtual" in Ada. Each caller of such a primitive operation decides,
> at the call site, whether the dispatching is static or dynamic.
> In contrast, in (my recollection of) C++, all virtual methods dispatch
> dynamically from all call sites: the decision is not made at the point
> of call but at the point of definition of the method.
In theory: No, C++ will staticly call function when possible.
In praxis: In 99% of the time there is only a pointer/reference available
and C++ need to dispatch then.
You see the point of a virtual function that there are child classes (unlike
i.E. string<> where there are no child classes). Since C++ has no 'Class
all child classes need to be dealt by pointer/reference use. so you need to
dispatch most of the time
Martin
--
mailto://krischik@users.sourceforge.net
Ada programming at: http://ada.krischik.com
next prev parent reply other threads:[~2005-09-14 16:10 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-13 5:58 tagged record child: override constructor? sean.gilbertson
2005-09-13 6:39 ` David Trudgett
2005-09-13 7:32 ` Dmitry A. Kazakov
2005-09-13 7:56 ` tmoran
2005-09-13 15:23 ` sean.gilbertson
2005-09-13 17:37 ` Martin Krischik
2005-09-13 19:29 ` Ludovic Brenta
2005-09-14 7:49 ` Dmitry A. Kazakov
2005-09-14 9:05 ` Maciej Sobczak
2005-09-14 13:20 ` Dmitry A. Kazakov
2005-09-14 13:52 ` Hyman Rosen
2005-09-14 16:47 ` Dmitry A. Kazakov
2005-09-14 17:16 ` Hyman Rosen
2005-09-14 20:20 ` Dmitry A. Kazakov
2005-09-14 20:34 ` Georg Bauhaus
2005-09-14 20:56 ` Hyman Rosen
2005-09-15 7:31 ` Dmitry A. Kazakov
2005-09-15 13:19 ` Hyman Rosen
2005-09-15 13:45 ` Maciej Sobczak
2005-09-15 17:45 ` Dmitry A. Kazakov
2005-09-15 18:54 ` Hyman Rosen
2005-09-16 9:32 ` Dmitry A. Kazakov
2005-09-16 14:52 ` Hyman Rosen
2005-09-16 15:33 ` Jean-Pierre Rosen
2005-09-16 18:37 ` Hyman Rosen
2005-09-16 21:03 ` Dmitry A. Kazakov
2005-09-16 21:33 ` Hyman Rosen
[not found] ` <98ox2x9xvj9z.1uh92dslhvt4g.dlg@40tude.net>
2005-09-17 12:47 ` Georg Bauhaus
2005-09-17 15:56 ` Dmitry A. Kazakov
2005-09-14 16:14 ` Martin Krischik
2005-09-14 16:57 ` Dmitry A. Kazakov
2005-09-14 18:35 ` Martin Krischik
2005-09-14 9:28 ` Alex R. Mosteo
2005-09-14 16:10 ` Martin Krischik [this message]
2005-09-13 9:33 ` Georg Bauhaus
2005-09-13 16:37 ` Jeffrey Carter
2005-09-13 18:55 ` Robert A Duff
2005-09-13 22:18 ` Jeffrey Carter
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