Re: size_t best practice

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From	Ike Naar <ike@sdf.org>
Newsgroups	comp.lang.c
Subject	Re: size_t best practice
Date	Thu, 22 Aug 2024 11:19:24 -0000 (UTC)
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On 2024-08-22, Tim Rentsch <tr.17687@z991.linuxsc.com> wrote:
> Andrey Tarasevich <andreytarasevich@hotmail.com> writes:
>
>> We can immediately apply the pattern I demonstrated above to this
>> and get
>>
>>   for (size_t i = v->_size - 1; i != index - 1; --i)
>>     v->_values[i + 1] = v->_values[i];
>>
>> Done.  No need for an extra safeguard.
>
> Better (please ignore cosmetic layout differences):
>
>     for( size_t i = v->_size;  i > index;  i--  ){
>         v->_values[i] = v->_values[i-1];
>     }

Or even get rid of the for loop, and use memmove() :

  memmove(v->_values + index + 1, v->_values + index,
          (v->_size - index) * sizeof *v->_values);

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size_t best practice Mark Summerfield <mark@qtrac.eu> - 2024-08-18 08:03 +0000
  Re: size_t best practice Ike Naar <ike@sdf.org> - 2024-08-18 08:38 +0000
    Re: size_t best practice Mark Summerfield <mark@qtrac.eu> - 2024-08-18 10:15 +0000
      Re: size_t best practice Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-08-20 07:38 -0700
  Re: size_t best practice Michael S <already5chosen@yahoo.com> - 2024-08-18 12:36 +0300
  Re: size_t best practice Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-18 04:32 -0700
  Re: size_t best practice Michael S <already5chosen@yahoo.com> - 2024-08-18 15:40 +0300
    Re: size_t best practice Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-18 15:23 -0700
      Re: size_t best practice Michael S <already5chosen@yahoo.com> - 2024-08-19 11:13 +0300
        Re: size_t best practice Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-19 09:43 -0700
  Re: size_t best practice Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-18 14:57 -0700
  Re: size_t best practice Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-08-20 06:53 -0700
    Re: size_t best practice Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-08-20 06:55 -0700
      Re: size_t best practice Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-08-20 06:56 -0700
        Re: size_t best practice Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-22 01:38 -0700
    Re: size_t best practice Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-22 01:31 -0700
      Re: size_t best practice Ike Naar <ike@sdf.org> - 2024-08-22 11:19 +0000
        Re: size_t best practice Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-22 06:12 -0700
  Re: size_t best practice Bonita Montero <Bonita.Montero@gmail.com> - 2024-08-24 19:49 +0200
    Re: size_t best practice Sjouke Burry <burrynulnulfour@ppllaanneett.nnll> - 2024-08-25 06:30 +0200
      Re: size_t best practice Bonita Montero <Bonita.Montero@gmail.com> - 2024-08-25 06:53 +0200
        Re: size_t best practice Vir Campestris <vir.campestris@invalid.invalid> - 2024-08-26 21:39 +0100
  Re: size_t best practice Bonita Montero <Bonita.Montero@gmail.com> - 2024-08-27 18:11 +0200

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