From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Subject: Re: Ada 2012: In-out parameters for functions
Date: Sun, 05 May 2013 23:37:10 +0300
Date: 2013-05-05T23:37:10+03:00 [thread overview]
Message-ID: <aunu7mFn79lU1@mid.individual.net> (raw)
In-Reply-To: <op.wwmlg7zpule2fv@cardamome>
On 13-05-05 22:23 , Yannick Duchêne (Hibou57) wrote:
> Le Sun, 05 May 2013 17:09:11 +0200, Niklas Holsti
> <niklas.holsti@tidorum.invalid> a écrit:
>> I believe I have made some Ada coding errors that would have been
>> revealed by mode notations in calls. I don't remember the exact
>> examples, but I think one concerned a procedure in which an "in"
>> parameter was changed to an "in out" parameter, because some new uses of
>> the subprogram required it -- but then some old uses no longer worked,
>> because they assumed that the actual for this parameter would not be
>> changed. And the actual was a non-constant object, so the compiler saw
>> nothing wrong in its use for an in-out parameter.
>
> That's an argument for Randy's idea to make constant the default mode
> for local variable and constant declarations.
Perhaps... as I remember, this object (the actual parameter in the
example I remember) was an array, or a record, which was built up by
several assignment statements, so it could not be a constant, without
considerable changes to the code.
--
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
. @ .
next prev parent reply other threads:[~2013-05-05 20:37 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-01 16:28 Ada 2012: In-out parameters for functions dptrash
2013-05-01 17:27 ` Shark8
2013-05-01 19:04 ` Yannick Duchêne (Hibou57)
2013-05-01 19:37 ` Dmitry A. Kazakov
2013-05-01 19:58 ` Yannick Duchêne (Hibou57)
2013-05-02 6:41 ` Dmitry A. Kazakov
2013-05-02 7:11 ` Yannick Duchêne (Hibou57)
2013-05-01 23:37 ` Peter C. Chapin
2013-05-03 10:48 ` anon
2013-05-03 11:04 ` Simon Clubley
2013-05-03 11:32 ` Simon Wright
2013-05-03 11:42 ` Yannick Duchêne (Hibou57)
2013-05-03 11:54 ` Yannick Duchêne (Hibou57)
2013-05-03 23:29 ` Randy Brukardt
2013-05-04 1:02 ` Adam Beneschan
2013-05-05 5:16 ` Randy Brukardt
2013-05-05 10:24 ` Niklas Holsti
2013-05-05 11:11 ` Yannick Duchêne (Hibou57)
2013-05-05 12:52 ` Bill Findlay
2013-05-05 15:09 ` Niklas Holsti
2013-05-05 19:23 ` Yannick Duchêne (Hibou57)
2013-05-05 20:37 ` Niklas Holsti [this message]
2013-05-07 0:30 ` Randy Brukardt
2013-05-07 2:36 ` Yannick Duchêne (Hibou57)
2013-05-05 19:45 ` Yannick Duchêne (Hibou57)
2013-05-06 15:40 ` Adam Beneschan
2013-05-06 16:17 ` Bill Findlay
2013-05-06 16:47 ` Adam Beneschan
2013-05-06 18:43 ` Bill Findlay
2013-05-07 0:07 ` Dennis Lee Bieber
2013-05-07 2:34 ` Yannick Duchêne (Hibou57)
2013-05-07 0:26 ` Randy Brukardt
2013-05-06 15:26 ` Adam Beneschan
2013-05-07 0:36 ` Randy Brukardt
2013-05-07 3:59 ` Yannick Duchêne (Hibou57)
2013-05-07 4:13 ` Yannick Duchêne (Hibou57)
2013-05-07 11:52 ` Yannick Duchêne (Hibou57)
2013-05-03 11:45 ` AdaMagica
2013-05-03 23:54 ` Randy Brukardt
2013-05-04 6:58 ` J-P. Rosen
2013-05-04 7:21 ` Dmitry A. Kazakov
2013-05-04 17:58 ` J-P. Rosen
2013-05-04 7:40 ` Yannick Duchêne (Hibou57)
2013-05-04 8:05 ` Simon Wright
2013-05-04 17:55 ` J-P. Rosen
2013-05-04 0:40 ` Keith Thompson
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