From: Keith Thompson <kst-u@mib.org>
Subject: Re: Ada 2012: In-out parameters for functions
Date: Fri, 03 May 2013 17:40:30 -0700
Date: 2013-05-03T17:40:30-07:00 [thread overview]
Message-ID: <ln1u9na875.fsf@nuthaus.mib.org> (raw)
In-Reply-To: UYadnS4eOq5gCB7MnZ2dnUVZ_jqdnZ2d@supernews.com
anon <anon@anon.org> writes:
[...]
> Since then one or more of Ada maintainers have decided to add number
> of "C" like syntax and/or coding to Ada. An example is the "conditional
> statements" another is the the "C" function/procedure call with both
> having in out parameters. A number of old "C" compilers ( 1980..1990s
> from Microsoft and IBM ) allowed the "in out" parameters for C
> functions.
[...]
Do you have a specific example of a C compiler that supports "in
out" parameters?
The C language itself has always specified pure pass-by-value
for all function parameters. (No, arrays are not an exception
to that; for details see section 6 of the comp.lang.c FAQ,
<http://www.c-faq.com>.) Pass-by-reference is easily, though
perhaps a bit clumsily, emulated by passing pointer arguments.
A C compiler certainly *could* support "in out" parameters as an
extension, but I've never heard of one that did.
--
Keith Thompson (The_Other_Keith) kst-u@mib.org <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
prev parent reply other threads:[~2013-05-04 0:40 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
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 [this message]
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