comp.lang.ada
 help / color / mirror / Atom feed
From: "Hyman Rosen" <hyrosen@mail.com>
Subject: Re: Merits of re-dispatching [LONG]
Date: Fri, 8 Feb 2002 13:10:15 -0500
Date: 2002-02-08T13:10:15-05:00	[thread overview]
Message-ID: <1013191766.895310@master.nyc.kbcfp.com> (raw)
In-Reply-To: u668rmhvhdub11@corp.supernews.com

"Matthew Heaney" <mheaney@on2.com> wrote in message news:u668rmhvhdub11@corp.supernews.com...
> Yes, but in Ada95, operations are static by default.  You have to take
> active steps in order to force the dispatching to occur.  So the scenario
> you describe cannot happen accidently.
>
> This is not the case in C++, where virtual member functions called through a
> reference or pointer automatically dispatch.  So yes you can very easily
> have the problem you cite in C++.  (Which is why many C++ books point out
> this feature of the language.)

I don't understand the argument you are making. The problem seems to me that
when you make a dispatching call in the destructor (automatically in C++ or by
request in Ada), C++ will take you to a safe function, whereas Ada will take
you to a function which can manipulate already finalized submembers.





  parent reply	other threads:[~2002-02-08 18:10 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-02-07 10:26 Merits of re-dispatching [LONG] Dmitry A. Kazakov
2002-02-07 15:03 ` Hyman Rosen
2002-02-08  1:29   ` Matthew Heaney
2002-02-08  9:16     ` Dmitry A. Kazakov
2002-02-08 18:30       ` Hyman Rosen
2002-02-09  0:10         ` Matthew Heaney
2002-02-12  8:32         ` Dmitry A. Kazakov
2002-02-12 21:37           ` Hyman Rosen
2002-02-13  9:29             ` Dmitry A. Kazakov
2002-02-13 14:32               ` Hyman Rosen
2002-02-13 19:58           ` Dave Harris
2002-02-14 15:06             ` Dmitry A. Kazakov
2002-02-16 12:10               ` Dave Harris
2002-02-18  8:57                 ` Dmitry A. Kazakov
2002-02-18 19:47                   ` Merits of re-dispatching Dave Harris
2002-02-19  9:20                     ` Dmitry A. Kazakov
2002-02-21  5:49                       ` Hyman Rosen
2002-02-21  9:04                         ` Dmitry A. Kazakov
2002-02-21 18:17                           ` Hyman Rosen
2002-02-22  9:21                             ` Dmitry A. Kazakov
2002-02-22 16:59                               ` Hyman Rosen
2002-02-25  8:51                                 ` Dmitry A. Kazakov
2002-02-08 23:51       ` Merits of re-dispatching [LONG] Matthew Heaney
2002-02-12  9:02         ` Dmitry A. Kazakov
2002-02-07 23:40 ` Nick Roberts
2002-02-08  8:56   ` Dmitry A. Kazakov
2002-02-08  1:06 ` Matthew Heaney
2002-02-08  9:48   ` Dmitry A. Kazakov
2002-02-09  0:16     ` Matthew Heaney
2002-02-08 18:10   ` Hyman Rosen [this message]
2002-02-09  0:41     ` Matthew Heaney
2002-02-08 18:33 ` Nick Roberts
2002-02-09  4:07   ` Nick Roberts
2002-02-12 10:13   ` Dmitry A. Kazakov
2002-02-14 20:57 ` Tucker Taft
2002-02-15 15:43   ` Dmitry A. Kazakov
replies disabled

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox