Re: Vector - contiguous memory question.

From	Ben <ben.usenet@bsb.me.uk>
Newsgroups	comp.lang.c++
Subject	Re: Vector - contiguous memory question.
Date	2022-05-29 01:47 +0100
Organization	A noiseless patient Spider
Message-ID	<871qwdw4f6.fsf@bsb.me.uk> (permalink)
References	(1 earlier) <t6qt9g$9h4$1@dont-email.me> <t6quef$hj8$1@dont-email.me> <t6sonk$1634$1@gioia.aioe.org> <87y1ylmzxn.fsf@bsb.me.uk> <t6udsg$kdo$1@dont-email.me>

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"Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> writes:

> On 5/28/2022 8:36 AM, Ben wrote:
>> Muttley@dastardlyhq.com writes:
>> 
>>> On Fri, 27 May 2022 12:32:15 -0400
>>> James Kuyper <jameskuyper@alumni.caltech.edu> wrote:
>>>> On 5/27/22 12:12, Vir Campestris wrote:
>>>>> On 26/05/2022 09:51, Muttley@dastardlyhq.com wrote:
>>>>>> write(fd,&mydata[0],mydata.size());
>>>>>>
>>>>>> or
>>>>>>
>>>>>> write(fd,mydata.data(),mydata.size());
>>>>>
>>>>> Nitpick for you - that won't write everything unless your array is chars.
>>>>
>>>> Agreed - but his array was of u_char, presumably a typedef for unsigned
>>>> char or something similar.
>>>
>>> Defined in sys/types.h
>>
>> Since it's not a standard type (as far as C++ is concerned) you can't be
>> sure what it is, and I don't think the OP gave a definition nor an
>> include file it might be defined in.
>
> A std::vector better be contiguous!

The thread has moved on from that.  The point here is whether the size
of the copy is correct.

-- 
Ben.

Thread

Vector - contiguous memory question. Muttley@dastardlyhq.com - 2022-05-26 08:51 +0000
  Re: Vector - contiguous memory question. Bo Persson <bo@bo-persson.se> - 2022-05-26 11:28 +0200
  Re: Vector - contiguous memory question. "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2022-05-26 12:36 +0200
    Re: Vector - contiguous memory question. Muttley@dastardlyhq.com - 2022-05-26 16:02 +0000
  Re: Vector - contiguous memory question. "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2022-05-26 18:25 +0200
  Re: Vector - contiguous memory question. James Kuyper <jameskuyper@alumni.caltech.edu> - 2022-05-26 13:53 -0400
  Re: Vector - contiguous memory question. Vir Campestris <vir.campestris@invalid.invalid> - 2022-05-27 17:12 +0100
    Re: Vector - contiguous memory question. James Kuyper <jameskuyper@alumni.caltech.edu> - 2022-05-27 12:32 -0400
      Re: Vector - contiguous memory question. Muttley@dastardlyhq.com - 2022-05-28 09:07 +0000
        Re: Vector - contiguous memory question. Ben <ben.usenet@bsb.me.uk> - 2022-05-28 16:36 +0100
          Re: Vector - contiguous memory question. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2022-05-28 17:14 -0700
            Re: Vector - contiguous memory question. Ben <ben.usenet@bsb.me.uk> - 2022-05-29 01:47 +0100
            Re: Vector - contiguous memory question. "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2022-05-28 22:06 -0700
          Re: Vector - contiguous memory question. Muttley@dastardlyhq.com - 2022-05-29 07:32 +0000
            Re: Vector - contiguous memory question. Ben <ben.usenet@bsb.me.uk> - 2022-05-29 19:43 +0100

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