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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: about the new Ada 2012 pre/post conditions
Date: Wed, 20 Jun 2012 23:04:17 +0200
Date: 2012-06-20T23:04:17+02:00	[thread overview]
Message-ID: <h5fpwoeqcg0s.1oao05lkc8yeu.dlg@40tude.net> (raw)
In-Reply-To: 218d3055-5610-491f-9f9f-5b08dbdbc720@googlegroups.com

On Wed, 20 Jun 2012 13:51:32 -0700 (PDT), Maciej Sobczak wrote:

> Decades of experience (OK, Java is a bit younger) show that it will usually be used as:
> 
> begin
>    Push (S, Element);
> exception
>    when others => null;
>    -- TODO: (errr, it never happens, right?)
> end;
> 
> The first version is at least easier to follow in the debugger...

Not in Ada where exceptions are not contracted. In Ada one just forgets to
catch.

Which raises an interesting question: if Ada had contracted exceptions,
people would start adding meaningless when others =>. But with contracted
exceptions the compiler would know all exceptions possible in the context.
We could make others an illegal choice in such cases. The programmer would
have to explicitly specify exceptions to catch.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de



  reply	other threads:[~2012-06-20 21:04 UTC|newest]

Thread overview: 125+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-20 13:39 about the new Ada 2012 pre/post conditions Nasser M. Abbasi
2012-06-20 14:02 ` Georg Bauhaus
2012-06-20 14:13 ` Dmitry A. Kazakov
2012-06-20 14:24   ` Nasser M. Abbasi
2012-06-20 14:37     ` Dmitry A. Kazakov
2012-06-20 17:02       ` Georg Bauhaus
2012-06-20 18:28         ` Dmitry A. Kazakov
2012-06-21 20:32       ` Randy Brukardt
2012-06-22  7:23         ` Dmitry A. Kazakov
2012-06-22 11:54           ` Georg Bauhaus
2012-06-22 12:39             ` Georg Bauhaus
2012-06-22 12:43             ` Dmitry A. Kazakov
2012-06-22 14:30               ` Georg Bauhaus
2012-06-22 14:36                 ` Georg Bauhaus
2012-06-22 15:05                 ` Dmitry A. Kazakov
2012-06-22 15:52                   ` Georg Bauhaus
2012-06-22 16:35                     ` Dmitry A. Kazakov
2012-06-22 16:53                       ` Georg Bauhaus
2012-06-22 16:45                   ` Georg Bauhaus
2012-06-22 17:24                     ` Dmitry A. Kazakov
2012-06-22 19:41           ` Randy Brukardt
2012-06-22 23:08             ` Dmitry A. Kazakov
2012-06-23 10:46               ` Georg Bauhaus
2012-06-23 11:01                 ` Dmitry A. Kazakov
2012-06-23 17:46                   ` AdaMagica
2012-06-23 19:23                     ` Dmitry A. Kazakov
2012-06-24 14:59                   ` Georg Bauhaus
2012-06-24 16:06                     ` Dmitry A. Kazakov
2012-06-24 19:51                       ` Georg Bauhaus
2012-06-25  7:48                         ` Dmitry A. Kazakov
2012-06-25 10:10                           ` Georg Bauhaus
2012-06-25  8:08                         ` Dmitry A. Kazakov
2012-06-25 10:17                           ` Georg Bauhaus
2012-06-25 11:54                             ` Dmitry A. Kazakov
2012-06-25 12:39                               ` Georg Bauhaus
2012-06-25 12:51                                 ` Georg Bauhaus
2012-06-25 13:19                                 ` Dmitry A. Kazakov
2012-06-25 16:43                                   ` Georg Bauhaus
2012-06-25 14:08                               ` stefan-lucks
2012-06-25 14:36                                 ` Dmitry A. Kazakov
2012-06-25 14:37                                   ` Dmitry A. Kazakov
2012-06-25 16:26                                   ` stefan-lucks
2012-06-25 19:42                                     ` Dmitry A. Kazakov
2012-06-26 11:50                                       ` stefan-lucks
2012-06-26 13:07                                         ` Dmitry A. Kazakov
2012-06-26 13:49                                           ` Georg Bauhaus
2012-06-26 14:45                                             ` Dmitry A. Kazakov
2012-06-26 16:48                                               ` Georg Bauhaus
2012-06-26 19:43                                                 ` Dmitry A. Kazakov
2012-06-27  8:23                                                   ` Georg Bauhaus
2012-06-27  8:52                                                     ` Dmitry A. Kazakov
2012-06-27 10:30                                                       ` Georg Bauhaus
2012-06-27 12:19                                                         ` Dmitry A. Kazakov
2012-06-27 13:41                                                           ` Nasser M. Abbasi
2012-06-28  7:00                                                             ` Georg Bauhaus
2012-06-27 15:08                                                           ` Georg Bauhaus
2012-06-29 21:03                                               ` Shark8
2012-06-30  8:26                                                 ` Dmitry A. Kazakov
2012-06-30 12:54                                                   ` Niklas Holsti
2012-07-05  2:58                                                   ` Shark8
2012-07-05  7:24                                                     ` Dmitry A. Kazakov
2012-07-06  6:23                                                       ` Shark8
2012-07-06  7:57                                                         ` Dmitry A. Kazakov
2012-07-07  1:09                                                           ` Randy Brukardt
2012-07-07  8:44                                                             ` Dmitry A. Kazakov
2012-06-26 14:54                                           ` stefan-lucks
2012-06-26 15:14                                             ` Dmitry A. Kazakov
2012-07-03  5:28                                           ` Randy Brukardt
2012-07-03 12:53                                             ` Dmitry A. Kazakov
2012-07-03 13:48                                               ` Georg Bauhaus
2012-07-03 14:06                                                 ` Dmitry A. Kazakov
2012-07-03 16:12                                                   ` Georg Bauhaus
2012-07-03 16:45                                                     ` Georg Bauhaus
2012-07-05  1:45                                               ` Randy Brukardt
2012-07-05  7:48                                                 ` Dmitry A. Kazakov
2012-07-05 19:11                                                   ` Adam Beneschan
2012-07-05 19:55                                                     ` Dmitry A. Kazakov
2012-07-06  7:41                                                       ` Georg Bauhaus
2012-07-06  7:47                                                         ` Georg Bauhaus
2012-07-06  8:05                                                         ` Dmitry A. Kazakov
2012-07-06  8:30                                                           ` Georg Bauhaus
2012-07-06  9:01                                                             ` Dmitry A. Kazakov
2012-07-06 11:33                                                               ` Simon Wright
2012-07-06 13:25                                                                 ` Dmitry A. Kazakov
2012-07-06 12:07                                                               ` Georg Bauhaus
2012-07-06 13:37                                                                 ` Dmitry A. Kazakov
2012-07-06 16:17                                                                   ` Georg Bauhaus
2012-07-06 16:34                                                                   ` Georg Bauhaus
2012-07-06 19:18                                                                     ` Dmitry A. Kazakov
2012-07-07  1:24                                                                       ` Randy Brukardt
2012-07-07  9:09                                                                         ` Dmitry A. Kazakov
2012-07-07  1:18                                                                   ` Randy Brukardt
2012-07-07  9:14                                                                     ` Dmitry A. Kazakov
2012-07-07 12:06                                                                       ` Georg Bauhaus
2012-07-07 12:54                                                                         ` Dmitry A. Kazakov
2012-07-07 13:31                                                                           ` Georg Bauhaus
2012-07-03  5:10                                       ` Randy Brukardt
2012-07-03  4:51               ` Randy Brukardt
2012-07-03 12:46                 ` Dmitry A. Kazakov
2012-07-05  2:18                   ` Randy Brukardt
2012-07-05  8:48                     ` Dmitry A. Kazakov
2012-07-05 12:07                       ` Georg Bauhaus
2012-07-05 12:13                         ` Georg Bauhaus
2012-07-05 12:31                         ` Dmitry A. Kazakov
2012-07-05 18:16                           ` Georg Bauhaus
2012-07-05 19:57                             ` Dmitry A. Kazakov
2012-07-06  6:53                               ` Georg Bauhaus
2012-07-07  0:43                       ` Randy Brukardt
2012-07-07  8:06                         ` Dmitry A. Kazakov
2012-07-07 11:17                           ` Georg Bauhaus
2012-07-07 11:31                             ` Dmitry A. Kazakov
2012-07-07 12:21                               ` Georg Bauhaus
2012-07-07 13:03                                 ` Dmitry A. Kazakov
2012-06-20 19:18 ` Anh Vo
2012-06-20 20:16 ` Jeffrey R. Carter
2012-06-20 20:21   ` Jeffrey R. Carter
2012-06-20 20:51   ` Maciej Sobczak
2012-06-20 21:04     ` Dmitry A. Kazakov [this message]
2012-06-20 22:19   ` Robert A Duff
2012-06-21  6:32     ` Georg Bauhaus
2012-06-21 20:37   ` Randy Brukardt
2012-06-21 20:55     ` Jeffrey Carter
2012-06-22 19:15       ` Randy Brukardt
2012-06-21 20:23 ` Randy Brukardt
2012-06-22  7:34   ` Martin
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