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Groups > comp.lang.c++ > #44860
| From | Melzzzzz <mel@zzzzz.com> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: This will work or not? |
| Date | 2016-09-05 13:36 +0200 |
| Organization | albasani.net |
| Message-ID | <20160905133650.798aaabb@maxa-pc> (permalink) |
| References | <20160831145918.45a0c396@maxa-pc> <nqjl7b$11es$1@adenine.netfront.net> |
On Mon, 5 Sep 2016 11:34:05 +0000 (UTC)
Juha Nieminen <nospam@thanks.invalid> wrote:
> Melzzzzz <mel@zzzzz.com> wrote:
> > struct Problem{
> > uint32_t a;
> > uint32_t b;
> > uint64_t c;
> > uint32_t d;
> > bool check_it() {
> > for (uint32_t* i = &a;i != &d; ++i)
> > if (*i>0) return true;
> > return false;
> > }
> >
> > };
>
> Rather than mess with implementation-defined and undefined behavior
> trickery, just redesign your struct better, in a manner that allows
> you to do what you want (ie. iterate through the member variables
> in a loop) without compromising code quality and standard conforming.
>
> For example:
>
> struct Problem
> {
> std::uint32_t values[4];
>
> std::uint32_t a() const { return values[0]; }
> void a(std::uint32_t v) { values[0] = v; }
> // and same for b(), c() and d().
> };
>
> Now you can safely iterate through the values in a loop.
>
> --- news://freenews.netfront.net/ - complaints: news@netfront.net ---
What about uint64_t ? It's a big struct I just made it minimal to show
problem.
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This will work or not? Melzzzzz <mel@zzzzz.com> - 2016-08-31 14:59 +0200
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Re: This will work or not? Melzzzzz <mel@zzzzz.com> - 2016-08-31 15:59 +0200
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-08-31 16:22 +0200
Re: This will work or not? Manfred <noname@invalid.add> - 2016-08-31 17:06 +0200
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Re: This will work or not? Tim Rentsch <txr@alumni.caltech.edu> - 2016-09-01 09:01 -0700
Re: This will work or not? Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2016-09-01 18:16 +0100
Re: This will work or not? Tim Rentsch <txr@alumni.caltech.edu> - 2016-09-01 18:37 -0700
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Re: This will work or not? me <crisdunbar@gmail.com> - 2016-09-01 13:50 -0700
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Re: This will work or not? me <crisdunbar@gmail.com> - 2016-09-02 12:26 -0700
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Re: This will work or not? me <crisdunbar@gmail.com> - 2016-09-02 13:51 -0700
Re: This will work or not? me <crisdunbar@gmail.com> - 2016-09-02 14:16 -0700
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Re: This will work or not? Manfred <noname@invalid.add> - 2016-09-02 11:41 +0200
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-02 12:27 +0200
Re: This will work or not? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-09-02 12:37 +0100
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-02 17:39 +0200
Re: This will work or not? Melzzzzz <mel@zzzzz.com> - 2016-09-02 17:40 +0200
Re: This will work or not? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-09-02 16:54 +0100
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Re: This will work or not? Richard Damon <Richard@Damon-Family.org> - 2016-09-02 21:48 -0400
Re: This will work or not? Manfred <noname@invalid.add> - 2016-09-02 15:17 +0200
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-02 17:46 +0200
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-01 23:14 +0200
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-01 21:02 -0400
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-02 09:35 +0200
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-02 08:50 -0400
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-02 17:59 +0200
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-02 12:49 -0400
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-02 20:36 +0200
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-02 16:32 -0400
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-03 18:08 +0200
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-03 18:25 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-03 23:51 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-03 21:48 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-04 03:48 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-03 23:05 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-04 05:02 +0100
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Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 09:40 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-04 16:39 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 12:46 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-04 17:51 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 13:07 -0400
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Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 18:54 -0400
Re: This will work or not? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-09-04 09:58 -0700
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 13:08 -0400
Re: This will work or not? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-09-04 10:21 -0700
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 17:18 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-04 22:24 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 18:56 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-05 00:27 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 22:53 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-05 18:18 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-05 15:27 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-05 20:32 +0100
Re: This will work or not? woodbrian77@gmail.com - 2016-09-05 14:07 -0700
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-05 18:15 -0400
Re: This will work or not? Ike Naar <ike@iceland.freeshell.org> - 2016-09-05 20:12 +0000
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-05 22:05 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-05 18:16 -0400
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-06 08:47 +0200
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-06 09:12 -0400
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-06 16:31 +0200
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-06 11:20 -0400
Re: This will work or not? bighe.trole@gmail.com - 2016-09-04 18:55 -0700
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 22:55 -0400
Re: This will work or not? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-09-04 17:17 -0700
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 22:57 -0400
Re: This will work or not? "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-09-05 11:20 -0700
Re: This will work or not? Luuk <luuk@invalid.lan> - 2016-09-04 18:54 +0200
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-04 17:59 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 13:08 -0400
Re: This will work or not? David Brown <david.brown@hesbynett.no> - 2016-09-04 20:25 +0200
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 17:20 -0400
Re: This will work or not? Öö Tiib <ootiib@hot.ee> - 2016-09-04 02:36 -0700
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-04 09:41 -0400
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-03 21:49 -0400
Re: This will work or not? Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2016-09-04 03:49 +0100
Re: This will work or not? Jerry Stuckle <jstucklex@attglobal.net> - 2016-09-03 23:06 -0400
Re: This will work or not? woodbrian77@gmail.com - 2016-09-03 21:16 -0700
Re: This will work or not? Vir Campestris <vir.campestris@invalid.invalid> - 2016-08-31 21:08 +0100
Re: This will work or not? "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2016-09-01 02:28 +0200
Re: This will work or not? Öö Tiib <ootiib@hot.ee> - 2016-09-01 01:28 -0700
Re: This will work or not? "Chris M. Thomasson" <invalid@invalid.invalid> - 2016-09-02 12:06 -0700
Re: This will work or not? Öö Tiib <ootiib@hot.ee> - 2016-09-05 02:21 -0700
Re: This will work or not? Melzzzzz <mel@zzzzz.com> - 2016-09-05 13:38 +0200
Re: This will work or not? Juha Nieminen <nospam@thanks.invalid> - 2016-09-05 11:34 +0000
Re: This will work or not? Melzzzzz <mel@zzzzz.com> - 2016-09-05 13:36 +0200
Re: This will work or not? Vir Campestris <vir.campestris@invalid.invalid> - 2016-09-05 21:25 +0100
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