Groups > comp.lang.c++ > #119589

Re: std::map::emplace useful in any way?

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From	usenet@stegropa.de (Stefan Große Pawig)
Newsgroups	comp.lang.c++
Subject	Re: std::map::emplace useful in any way?
Date	Sun, 30 Jun 2024 21:21:24 +0200
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Bonita Montero <Bonita.Montero@gmail.com> writes:
> Am 30.06.2024 um 18:47 schrieb Andrey Tarasevich:
>> On 05/25/24 10:41 AM, Bonita Montero wrote:
>>>
>>> You can find() your key and if it doesn't exist you emplace() the
>>> new node.
>> Which is completely unacceptable, ...
>
> Depends on your constraints. Before C++17 there was no other solution
> for that and you had to accept that.

What about using lower_bound() and emplace_hint() instead? That is
available since C++11.

And while C++98 does not have emplace_hint(), the insert() overload that
takes an iterator as first argument can be used.

  Stefan

Thread

std::map::emplace useful in any way? Marcel Mueller <news.5.maazl@spamgourmet.org> - 2024-05-25 17:57 +0200
  Re: std::map::emplace useful in any way? Paavo Helde <eesnimi@osa.pri.ee> - 2024-05-25 20:37 +0300
    Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-28 17:53 +0200
      Re: std::map::emplace useful in any way? Paavo Helde <eesnimi@osa.pri.ee> - 2024-05-29 11:11 +0300
        Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-29 11:47 +0200
          Re: std::map::emplace useful in any way? Paavo Helde <eesnimi@osa.pri.ee> - 2024-05-29 15:05 +0300
            Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-29 18:56 +0200
              Re: std::map::emplace useful in any way? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-05-29 12:23 -0700
                Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-30 16:01 +0200
  Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-05-25 19:41 +0200
    Re: std::map::emplace useful in any way? Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-06-30 09:47 -0700
      Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-06-30 19:15 +0200
        Re: std::map::emplace useful in any way? Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-06-30 11:46 -0700
        Re: std::map::emplace useful in any way? usenet@stegropa.de (Stefan Große Pawig) - 2024-06-30 21:21 +0200
          Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-06-30 23:49 +0200
            Re: std::map::emplace useful in any way? Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-06-30 18:29 -0700
              Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-07-01 13:41 +0200
                Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-07-07 13:17 +0200
                Re: std::map::emplace useful in any way? Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-07-07 09:16 -0700
                Re: std::map::emplace useful in any way? Bonita Montero <Bonita.Montero@gmail.com> - 2024-07-07 18:18 +0200
            Re: std::map::emplace useful in any way? usenet@stegropa.de (Stefan Große Pawig) - 2024-07-01 07:41 +0200
  Re: std::map::emplace useful in any way? Sam <sam@email-scan.com> - 2024-05-25 18:29 -0400
  Re: std::map::emplace useful in any way? usenet@stegropa.de (Stefan Große Pawig) - 2024-06-30 21:09 +0200
  Re: std::map::emplace useful in any way? Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-06-30 13:32 -0700
    Re: std::map::emplace useful in any way? Marcel Mueller <news.5.maazl@spamgourmet.org> - 2024-07-07 11:09 +0200

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