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| From | Bartc <bc@freeuk.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: C struct syntax allowance by usage |
| Date | 2015-10-16 22:15 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <mvrp94$p8a$1@dont-email.me> (permalink) |
| References | <40812880-9a99-48c6-9d67-6d6a98be00e1@googlegroups.com> |
On 16/10/2015 21:29, Rick C. Hodgin wrote:
> Has there ever been a syntax allowance in C which would allow
> something like this to be created without a reference to the
> member object?
>
> 01: struct SAbc
> 02: {
> 03: int i;
> 04: float f;
> 05: };
> 06:
> 07: int main(int argc, char* argv[])
> 08: {
> 09: struct SAbc abc;
> 10:
> 11: abc = 5;
> 12: abc = 2.0f;
> 13:
> 14: printf("%d, %f\n", abc, abc);
> 15: }
>
> Where the meaning of the above is actually understood by the
> language/compiler to be these members, because there is only
> one of each type in the structure:
>
> 11: abc.i = 5;
> 12: abc.f = 2.0f;
> 13:
> 14: printf("%d, %f\n", abc.i, abc.f);
>
> The language/compiler should be able to discern by usage
> which member is needed,
What's the purpose?
so that it doesn't require the
> member reference by name. Has this ever been part of the
> C programming language? Or is it part of C++ or C#?
I'd imagine those last two could have ways of overloading the assignment
operator for when the left-hand-side is a struct. But you might have to
specify every combination for each specific struct and each kind of
memory, unless there is some complicated solution involving macros and
templates.
I can still see plenty of problems, eg what happens when there are two
members with the same type? What about 'int' and 'short' member types,
but a rhs of 0?
What about about a nested version where one one member of a Sabc is also
a struct that has member types int and float; would it still be possible
to write abc = 5 and instead write several levels deep into the struct?
(I could go on, because my POV is that of someone who might have to
implement it! This stuff cannot be ambiguous or ill-defined.)
You also lose the ability to pick up an incorrect assignment of a scalar
to a struct.
--
Bartc
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C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 13:29 -0700
Re: C struct syntax allowance by usage Siri Cruz <chine.bleu@yahoo.com> - 2015-10-16 13:47 -0700
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-16 14:12 -0700
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-16 22:15 +0100
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 14:38 -0700
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-17 10:32 +0100
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-17 05:26 -0700
Re: C struct syntax allowance by usage Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-17 14:17 +0100
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-17 06:48 -0700
Re: C struct syntax allowance by usage Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-17 19:01 +0100
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-17 11:17 -0700
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-16 15:28 -0700
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-17 01:41 +0100
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 18:23 -0700
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-18 11:04 +0200
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-17 10:31 +1300
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 14:38 -0700
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-17 11:14 +1300
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 15:25 -0700
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-17 11:31 +1300
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 15:38 -0700
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-17 12:32 +1300
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-18 11:35 +0200
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-18 11:16 +0100
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-18 13:40 +0200
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-18 17:35 +0100
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-18 10:52 -0700
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-18 11:02 -0700
Re: C struct syntax allowance by usage Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-18 19:59 +0100
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-18 12:15 -0700
Re: C struct syntax allowance by usage Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-18 21:41 +0100
Likeliehood of RDC/SeaAlive implementation (Was: C struct syntax allowance by usage) gazelle@shell.xmission.com (Kenny McCormack) - 2015-10-19 08:23 +0000
Re: C struct syntax allowance by usage Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-10-18 14:02 -0400
Re: C struct syntax allowance by usage Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-10-18 14:19 -0400
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-18 21:13 +0100
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-18 20:37 +0200
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-18 20:27 +0100
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-18 23:14 +0200
Re: C struct syntax allowance by usage asetofsymbols@gmail.com - 2015-10-18 15:09 -0700
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-18 16:11 -0700
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-19 07:57 +1300
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-18 20:11 +0100
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-19 09:19 +1300
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-18 11:19 +0200
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-18 03:08 -0700
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-18 13:52 +0200
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-18 05:39 -0700
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-18 14:57 +0200
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-19 10:31 +1300
Re: C struct syntax allowance by usage Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-18 15:49 +0100
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-18 16:53 -0700
Re: C struct syntax allowance by usage Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-19 01:50 +0100
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-19 02:28 -0700
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-19 12:38 +0200
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-19 12:09 +0100
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-19 14:26 +0200
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-19 13:34 +0100
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-20 02:36 +0000
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-19 05:09 -0700
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-19 14:41 +0200
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-19 06:08 -0700
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-19 15:20 +0200
Re: C struct syntax allowance by usage Keith Thompson <kst-u@mib.org> - 2015-10-19 08:24 -0700
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-20 08:43 +1300
Re: C struct syntax allowance by usage Keith Thompson <kst-u@mib.org> - 2015-10-19 13:00 -0700
Re: C struct syntax allowance by usage Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-19 20:34 +0000
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-20 09:47 +1300
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-19 16:32 -0700
Re: C struct syntax allowance by usage Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-20 10:37 +0000
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-19 21:24 +0000
Re: C struct syntax allowance by usage Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-20 13:49 +0000
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-20 07:33 -0700
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-20 15:53 +0000
Re: C struct syntax allowance by usage Keith Thompson <kst-u@mib.org> - 2015-10-20 10:37 -0700
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-21 05:05 +0000
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-21 02:02 -0700
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-21 06:07 -0700
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-21 14:15 +0100
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-21 09:23 -0700
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-21 18:30 +0100
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-21 12:13 -0700
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-21 21:17 +0100
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-21 14:21 -0700
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-21 14:55 -0700
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-21 15:45 -0700
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-22 14:33 +0200
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-22 08:54 -0700
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-23 15:59 +0200
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-23 15:03 -0700
Re: C struct syntax allowance by usage Richard Damon <Richard@Damon-Family.org> - 2015-10-24 10:37 -0400
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-21 23:26 +0100
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-21 15:56 -0700
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-22 05:19 +0000
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-22 11:08 +0100
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-22 14:58 +0200
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-22 14:06 +0200
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-22 07:41 -0700
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-22 14:00 +0100
Re: C struct syntax allowance by usage Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-22 21:00 +0000
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-22 14:57 -0700
Re: C struct syntax allowance by usage Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-21 14:41 +0000
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-21 13:01 -0700
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-21 13:25 -0700
Re: C struct syntax allowance by usage Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-22 07:44 +0000
Re: C struct syntax allowance by usage Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-21 13:41 +0000
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-22 05:22 +0000
Re: C struct syntax allowance by usage Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-10-22 01:01 -0700
Re: C struct syntax allowance by usage Les Cargill <lcargill99@comcast.com> - 2015-10-22 08:00 -0500
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-21 09:49 -0400
Re: C struct syntax allowance by usage Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-21 13:20 +0000
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-20 15:40 +0000
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-20 11:55 -0400
Re: C struct syntax allowance by usage Keith Thompson <kst-u@mib.org> - 2015-10-20 10:34 -0700
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-21 05:20 +0000
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-21 05:11 +0000
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-21 09:47 -0400
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-22 05:32 +0000
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-22 10:08 -0400
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-22 21:45 +0000
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-22 19:09 -0400
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-22 19:22 -0400
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-22 17:49 -0700
Re: C struct syntax allowance by usage Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-10-22 21:13 -0400
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-23 11:36 +0000
Re: C struct syntax allowance by usage Robert Wessel <robertwessel2@yahoo.com> - 2015-10-22 20:18 -0500
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-23 11:55 +0000
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-23 11:14 +0000
Re: C struct syntax allowance by usage Keith Thompson <kst-u@mib.org> - 2015-10-23 09:09 -0700
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-24 09:31 +0000
Re: C struct syntax allowance by usage raltbos@xs4all.nl (Richard Bos) - 2015-11-10 15:17 +0000
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-11-10 10:39 -0800
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-11-10 11:02 -0800
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-23 15:54 -0400
Re: C struct syntax allowance by usage Keith Thompson <kst-u@mib.org> - 2015-10-23 13:51 -0700
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-23 17:41 -0400
Re: C struct syntax allowance by usage raltbos@xs4all.nl (Richard Bos) - 2015-11-10 15:32 +0000
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-23 15:17 -0700
Re: C struct syntax allowance by usage Keith Thompson <kst-u@mib.org> - 2015-10-23 16:34 -0700
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-24 09:51 +0000
Re: C struct syntax allowance by usage Richard Damon <Richard@Damon-Family.org> - 2015-10-24 10:01 -0400
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-24 12:38 -0400
Re: C struct syntax allowance by usage Robert Wessel <robertwessel2@yahoo.com> - 2015-10-24 13:56 -0500
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-24 15:17 -0400
Re: C struct syntax allowance by usage Robert Wessel <robertwessel2@yahoo.com> - 2015-10-25 13:47 -0500
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-25 23:46 +0000
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-25 07:05 +0000
Re: C struct syntax allowance by usage James Kuyper <jameskuyper@verizon.net> - 2015-10-25 10:59 -0400
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-26 02:24 +0000
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-25 11:13 -0700
Re: C struct syntax allowance by usage glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-26 02:58 +0000
Re: C struct syntax allowance by usage supercat@casperkitty.com - 2015-10-24 11:02 -0700
Re: C struct syntax allowance by usage Sjouke Burry <burrynulnulfour@ppllaanneett.nnll> - 2015-10-24 20:13 +0200
Re: C struct syntax allowance by usage Keith Thompson <kst-u@mib.org> - 2015-10-24 12:45 -0700
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-24 10:30 +1300
Re: C struct syntax allowance by usage Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-19 12:05 +0100
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 15:57 -0700
Re: C struct syntax allowance by usage Bartc <bc@freeuk.com> - 2015-10-17 00:54 +0100
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 17:19 -0700
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-17 15:33 +1300
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 19:41 -0700
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-17 15:58 +1300
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 20:10 -0700
Re: C struct syntax allowance by usage Ian Collins <ian-news@hotmail.com> - 2015-10-17 16:49 +1300
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 20:59 -0700
Re: C struct syntax allowance by usage David Brown <david.brown@hesbynett.no> - 2015-10-18 11:32 +0200
Re: C struct syntax allowance by usage Richard Damon <Richard@Damon-Family.org> - 2015-10-16 23:15 -0400
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 20:34 -0700
Re: C struct syntax allowance by usage "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-10-16 20:45 -0700
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