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Groups > comp.lang.c > #136449
| From | Spiros Bousbouras <spibou@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: An enhancement |
| Message-ID | <qwerty@bongo-ra.co> (permalink) |
| References | <531a5bb6-dc81-4eeb-9adf-1bf8eb310f65@googlegroups.com> |
| Organization | virginmedia.com |
| Date | 2018-10-08 23:37 +0000 |
On Mon, 8 Oct 2018 15:44:14 -0700 (PDT)
David Kleinecke <dkleinecke@gmail.com> wrote:
> I want to propose an enhancement:
>
> Add to C the statement type
> DO identifier SEMICOLON
> where the identifier is a label. The meaning is that
> the statement just identified is replaced by the
> statement following the label.
[...]
> The purpose of this enhancement is to enable
> top-down coding in the sense Knuth wanted with
> his literate programming. You can write code
> like:
> int foo (int x) {
> if (x < 0) do trivial_case;
> else if (x == 0) do easy_case;
> else do usual_case;
> return;
> trivial_case: {
> .... }
> easy_case: {
> .... }
> usual_case: {
> .... }}
> which is generally easier to understand if you have
> given as labels good descriptive phrases.
You could achieve the same with macros :
int foo (int x) {
#define trivial_case { \
.... \
}
#define easy_case { \
.... \
}
#define usual_case { \
.... \
}
if (x < 0) trivial_case
else if (x == 0) easy_case
else usual_case
return 13 ;
}
Your code looks cleaner but I'm not sure the difference is worth adding
the new syntax.
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An enhancement David Kleinecke <dkleinecke@gmail.com> - 2018-10-08 15:44 -0700
Re: An enhancement Ian Collins <ian-news@hotmail.com> - 2018-10-09 11:48 +1300
Re: An enhancement Spiros Bousbouras <spibou@gmail.com> - 2018-10-08 23:16 +0000
Re: An enhancement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-10-09 00:30 +0100
Re: An enhancement David Kleinecke <dkleinecke@gmail.com> - 2018-10-08 17:24 -0700
Re: An enhancement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-10-09 02:12 +0100
Re: An enhancement David Kleinecke <dkleinecke@gmail.com> - 2018-10-08 22:42 -0700
Re: An enhancement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-10-09 14:41 +0100
Re: An enhancement David Brown <david.brown@hesbynett.no> - 2018-10-09 11:15 +0200
Re: An enhancement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-10-09 16:09 +0100
GCC nested functions: deprecated? (Was: An enhancement) gazelle@shell.xmission.com (Kenny McCormack) - 2018-10-09 15:36 +0000
Re: An enhancement David Brown <david.brown@hesbynett.no> - 2018-10-09 21:01 +0200
Re: An enhancement Bart <bc@freeuk.com> - 2018-10-09 11:43 +0100
Re: An enhancement already5chosen@yahoo.com - 2018-10-09 04:08 -0700
Re: An enhancement Bart <bc@freeuk.com> - 2018-10-09 12:29 +0100
Re: An enhancement Spiros Bousbouras <spibou@gmail.com> - 2018-10-08 23:37 +0000
Re: An enhancement David Kleinecke <dkleinecke@gmail.com> - 2018-10-08 17:22 -0700
Re: An enhancement Ian Collins <ian-news@hotmail.com> - 2018-10-09 13:30 +1300
Re: An enhancement Spiros Bousbouras <spibou@gmail.com> - 2018-10-09 05:23 +0000
Re: An enhancement David Kleinecke <dkleinecke@gmail.com> - 2018-10-08 22:50 -0700
Re: An enhancement Richard Damon <Richard@Damon-Family.org> - 2018-10-09 08:28 -0400
Re: An enhancement Wouter Verhelst <w@uter.be> - 2018-10-09 14:05 +0200
C is often used as an "implementation language" for other languages. (Was: An enhancement) gazelle@shell.xmission.com (Kenny McCormack) - 2018-10-09 13:13 +0000
Re: C is often used as an "implementation language" for other languages. (Was: An enhancement) David Brown <david.brown@hesbynett.no> - 2018-10-09 16:51 +0200
Re: An enhancement Bart <bc@freeuk.com> - 2018-10-09 14:17 +0100
Re: An enhancement Thiago Adams <thiago.adams@gmail.com> - 2018-10-09 05:20 -0700
Re: An enhancement David Kleinecke <dkleinecke@gmail.com> - 2018-10-09 11:33 -0700
Re: An enhancement Thiago Adams <thiago.adams@gmail.com> - 2018-10-09 13:41 -0700
Re: An enhancement Bart <bc@freeuk.com> - 2018-10-09 12:35 +0100
Re: An enhancement Wouter Verhelst <w@uter.be> - 2018-10-09 14:04 +0200
Re: An enhancement Spiros Bousbouras <spibou@gmail.com> - 2018-10-09 12:29 +0000
Re: An enhancement Wouter Verhelst <w@uter.be> - 2018-10-09 19:50 +0200
Re: An enhancement queequeg@trust.no1 (Queequeg) - 2018-10-15 09:19 +0000
Re: An enhancement already5chosen@yahoo.com - 2018-10-15 03:07 -0700
Re: An enhancement Ian Collins <ian-news@hotmail.com> - 2018-10-15 23:18 +1300
Re: An enhancement already5chosen@yahoo.com - 2018-10-15 03:39 -0700
Re: An enhancement David Brown <david.brown@hesbynett.no> - 2018-10-15 13:03 +0200
Re: An enhancement Bart <bc@freeuk.com> - 2018-10-15 12:15 +0100
Re: An enhancement Thiago Adams <thiago.adams@gmail.com> - 2018-10-15 05:20 -0700
Re: An enhancement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-10-15 15:39 +0100
Re: An enhancement David Brown <david.brown@hesbynett.no> - 2018-10-15 14:36 +0200
Re: An enhancement Thiago Adams <thiago.adams@gmail.com> - 2018-10-15 05:59 -0700
Re: An enhancement David Brown <david.brown@hesbynett.no> - 2018-10-15 15:08 +0200
Re: An enhancement Thiago Adams <thiago.adams@gmail.com> - 2018-10-15 07:25 -0700
Re: An enhancement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-10-15 15:44 +0100
Re: An enhancement David Kleinecke <dkleinecke@gmail.com> - 2018-10-15 19:02 -0700
Re: An enhancement Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-10-16 05:55 +0000
Re: An enhancement jameskuyper@alumni.caltech.edu - 2018-10-16 05:37 -0700
Re: An enhancement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-10-16 15:11 +0100
Re: An enhancement David Kleinecke <dkleinecke@gmail.com> - 2018-10-16 13:33 -0700
Re: An enhancement David Kleinecke <dkleinecke@gmail.com> - 2018-10-16 21:27 -0700
Re: An enhancement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-10-16 14:57 +0100
Re: An enhancement scott@slp53.sl.home (Scott Lurndal) - 2018-10-16 14:24 +0000
Re: An enhancement mark.bluemel@gmail.com - 2018-10-16 07:28 -0700
Re: An enhancement Bart <bc@freeuk.com> - 2018-10-16 15:25 +0100
Re: An enhancement Bart <bc@freeuk.com> - 2018-10-15 11:44 +0100
Re: An enhancement David Brown <david.brown@hesbynett.no> - 2018-10-15 13:08 +0200
Re: An enhancement Bart <bc@freeuk.com> - 2018-10-15 11:22 +0100
Re: An enhancement David Brown <david.brown@hesbynett.no> - 2018-10-15 13:01 +0200
Re: An enhancement Nick Bowler <nbowler@draconx.ca> - 2018-10-15 14:43 +0000
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