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Groups > comp.lang.c > #103461
| From | BartC <bc@freeuk.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: C Names and Scopes |
| Date | 2017-02-08 13:31 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <o7f6fl$6jj$1@dont-email.me> (permalink) |
| References | (1 earlier) <f5ef390c-fbda-4644-8e35-6f19f6d6e6c1@googlegroups.com> <o7evtg$fk1$1@dont-email.me> <scope-20170208125032@ram.dialup.fu-berlin.de> <o7f1hc$l57$1@dont-email.me> <identifiers-20170208131431@ram.dialup.fu-berlin.de> |
On 08/02/2017 12:15, Stefan Ram wrote:
> BartC <bc@freeuk.com> writes:
>> On 08/02/2017 11:52, Stefan Ram wrote:
>>> http://www.purl.org/stefan_ram/pub/c_konstanten_de
>> ('zehn' is 11?)
>
> Yes. Once a participiant wondered whether the implementation
> understands German. So I use this to show that it does /not/
> understand German, but just uses whatever value you give to it.
>
>> It's more than trivial when you have to implement it.
>
> Admitted.
>
>> And I gave an example in one of my links where there are five identical
>> names in the same block all meaning different things!
>
> For teaching purposes I often use this, to make it clear
> when the implementation can deduce the scope of a name.
>
> Here's one example from my C++ course:
>
> #include <iostream>
> #include <ostream>
> #include <string>
>
> struct entity { ::std::string entity; };
>
> int main()
> { entity entity; ::std::cout << '"' << entity.entity << '"' << '\n'; }
>
So, using {n} to disambiguate, that means:
struct entity{1} { ::std::string entity{2}; };
int main()
{ entity{1} entity{3}; ::std::cout << '"' << entity{3}.entity{2} <<
'"' << '\n'; }
The only surprise here is allowing {1} and {3], a type name and variable
name, to co-exist, something not even C allows (entity{1} would need to
be tagged with 'struct').
(The languages I create are old-fashioned - they only allow one instance
of a top-level name, and only once *per function*. So here, entity{3}
wouldn't be allowed, not with the same name. (Names after "." are OK.)
I don't think it causes code to be less readable; quite the opposite in
fact.)
--
Bartc
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C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 02:13 +0000
Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-08 10:09 +0100
Re: C Names and Scopes mark.bluemel@gmail.com - 2017-02-08 02:37 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 11:07 +0000
Re: C Names and Scopes fir <profesor.fir@gmail.com> - 2017-02-08 09:03 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 17:19 +0000
Re: C Names and Scopes fir <profesor.fir@gmail.com> - 2017-02-08 09:42 -0800
Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-08 12:08 +0100
Re: C Names and Scopes Moai <penultimategrill@gmail.com> - 2017-02-08 19:16 -0500
Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-09 01:32 +0100
Re: C Names and Scopes Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-09 08:18 -0800
Re: C Names and Scopes Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-09 12:06 -0500
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 10:51 +0000
Re: C Names and Scopes Thiago Adams <thiago.adams@gmail.com> - 2017-02-08 03:11 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 11:39 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 12:06 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 13:31 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 13:40 +0000
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-08 16:39 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 17:51 +0000
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-08 20:56 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 22:08 +0000
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-08 23:27 +0000
Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-08 13:41 +0100
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-08 14:32 +0000
Re: C Names and Scopes supercat@casperkitty.com - 2017-02-08 07:28 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 20:12 +0000
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-08 12:38 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 21:54 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 22:40 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-09 18:48 +0000
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-09 19:53 +0000
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-09 12:25 -0800
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-09 21:27 +0000
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-09 13:57 -0800
Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-13 10:54 +0100
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 00:26 +0000
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-10 00:42 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 01:03 +0000
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-10 01:49 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 12:31 +0000
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-10 23:48 +0000
Re: C Names and Scopes supercat@casperkitty.com - 2017-02-10 16:06 -0800
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-10 16:22 -0800
Re: C Names and Scopes supercat@casperkitty.com - 2017-02-12 09:17 -0800
Re: C Names and Scopes Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-15 16:26 -0800
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-09 17:56 -0800
Re: C Names and Scopes supercat@casperkitty.com - 2017-02-10 07:42 -0800
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-10 08:44 -0800
Re: C Names and Scopes supercat@casperkitty.com - 2017-02-10 09:25 -0800
Re: C Names and Scopes Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-10 16:43 -0500
Re: C Names and Scopes supercat@casperkitty.com - 2017-02-10 14:04 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 22:52 +0000
Re: C Names and Scopes Andrey Tarasevich <andreytarasevich@hotmail.com> - 2017-02-10 15:10 -0800
Re: C Names and Scopes Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-15 16:31 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-09 23:09 +0000
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-09 23:36 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 00:19 +0000
Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-10 00:38 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-04 01:23 +0000
Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-03 18:23 -0800
Re: C Names and Scopes GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-04 14:42 +0100
Re: C Names and Scopes "James R. Kuyper" <jameskuyper@verizon.net> - 2017-03-04 11:02 -0500
Re: C Names and Scopes GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-04 23:35 +0100
Re: C Names and Scopes Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-04 14:50 -0800
Re: C Names and Scopes Richard Heathfield <rjh@cpax.org.uk> - 2017-03-05 13:39 +0000
Re: C Names and Scopes GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-05 15:10 +0100
Re: C Names and Scopes Richard Heathfield <rjh@cpax.org.uk> - 2017-03-05 14:34 +0000
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-03-05 19:25 -0800
Re: C Names and Scopes raltbos@xs4all.nl (Richard Bos) - 2017-03-06 09:37 +0000
Re: C Names and Scopes Richard Heathfield <rjh@cpax.org.uk> - 2017-03-06 10:34 +0000
Re: C Names and Scopes James Kuyper <jameskuyper@verizon.net> - 2017-03-06 07:23 -0500
Re: C Names and Scopes GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-06 14:26 +0100
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-03-04 11:52 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-04 20:13 +0000
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-04 20:17 +0000
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-03-04 12:38 -0800
Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-04 13:50 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-04 22:37 +0000
Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-04 16:15 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-05 00:31 +0000
Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-04 16:47 -0800
Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-05 01:42 +0000
Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-04 19:20 -0800
Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-03-05 01:40 -0800
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