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Groups > comp.lang.c++ > #118676

Re: Ain't that beautiful ?

From Michael S <already5chosen@yahoo.com>
Newsgroups comp.lang.c++
Subject Re: Ain't that beautiful ?
Date 2024-04-07 15:25 +0300
Organization A noiseless patient Spider
Message-ID <20240407152541.00005236@yahoo.com> (permalink)
References (5 earlier) <GLYPN.6$zaCc.4@fx08.iad> <uupmvv$1j8sq$1@raubtier-asyl.eternal-september.org> <03_PN.124502$U1cc.11575@fx04.iad> <uurm8q$24ka4$1@dont-email.me> <dodQN.493622$yEgf.114692@fx09.iad>

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On Sat, 06 Apr 2024 14:56:09 GMT
scott@slp53.sl.home (Scott Lurndal) wrote:

> Paavo Helde <eesnimi@osa.pri.ee> writes:
> >06.04.2024 00:29 Scott Lurndal kirjutas:  
> >> 
> >> Most of C++ is useless cruft with a significant run-time
> >> performance hit.
> >> 
> >> Classes are genuinely useful, as are namespaces.  
> >
> >So are standard containers, like std::vector and std::map. No
> >run-time performance hits compared to equivalent solutions in C.  
> 
> For the most part true of std::vector.   Not necessarily for
> std::map.
>

IMHO, std::map is a very good default choice when you start coding and
don't know yet if key-value store is going to be big or small,
predominantly read or with significant updating, performance critical
or not and in need of ordering or there would never be such need.
Of course, normally you figure the part about the need of ordering quite
quickly, but sweeping std::map with std:unordered_map is not hard.

The nice thing about std::map is that it's pretty much always within
factor of 10 from the absolutely best custom data structure, both in
memory consumption and in speed, so the choice std::map cam be wrong,
but unlikely to be critically wrong.



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Thread

Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-04 20:11 +0200
  Re: Ain't that beautiful ? Michael S <already5chosen@yahoo.com> - 2024-04-04 21:55 +0300
    Re: Ain't that beautiful ? Sam <sam@email-scan.com> - 2024-04-04 20:00 -0400
      Re: Ain't that beautiful ? scott@slp53.sl.home (Scott Lurndal) - 2024-04-05 00:21 +0000
        Re: Ain't that beautiful ? Michael S <already5chosen@yahoo.com> - 2024-04-05 17:44 +0300
          Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-05 17:27 +0200
            Re: Ain't that beautiful ? Michael S <already5chosen@yahoo.com> - 2024-04-05 18:37 +0300
              Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-05 18:04 +0200
                Re: Ain't that beautiful ? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-04-06 15:55 -0700
                Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-07 08:28 +0200
                Re: Ain't that beautiful ? scott@slp53.sl.home (Scott Lurndal) - 2024-04-07 15:51 +0000
                Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-07 19:35 +0200
                Re: Ain't that beautiful ? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-04-07 12:21 -0700
    Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-05 05:05 +0200
      Re: Ain't that beautiful ? Michael S <already5chosen@yahoo.com> - 2024-04-05 17:52 +0300
        Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-05 17:26 +0200
          Re: Ain't that beautiful ? scott@slp53.sl.home (Scott Lurndal) - 2024-04-05 20:00 +0000
            Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-05 22:29 +0200
              Re: Ain't that beautiful ? scott@slp53.sl.home (Scott Lurndal) - 2024-04-05 21:29 +0000
                Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-06 09:06 +0200
                Re: Ain't that beautiful ? Paavo Helde <eesnimi@osa.pri.ee> - 2024-04-06 17:29 +0300
                Re: Ain't that beautiful ? scott@slp53.sl.home (Scott Lurndal) - 2024-04-06 14:56 +0000
                Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-06 18:34 +0200
                Re: Ain't that beautiful ? wij <wyniijj5@gmail.com> - 2024-04-07 03:00 +0800
                Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-07 08:28 +0200
                Re: Ain't that beautiful ? wij <wyniijj5@gmail.com> - 2024-04-08 07:47 +0800
                Re: Ain't that beautiful ? Michael S <already5chosen@yahoo.com> - 2024-04-07 15:25 +0300
                Re: Ain't that beautiful ? Michael S <already5chosen@yahoo.com> - 2024-04-07 16:00 +0300
                Re: Ain't that beautiful ? David Brown <david.brown@hesbynett.no> - 2024-04-07 16:06 +0200
                Re: Ain't that beautiful ? Michael S <already5chosen@yahoo.com> - 2024-04-07 18:37 +0300
                Re: Ain't that beautiful ? scott@slp53.sl.home (Scott Lurndal) - 2024-04-07 15:58 +0000
                Re: Ain't that beautiful ? David Brown <david.brown@hesbynett.no> - 2024-04-07 18:00 +0200
                Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-07 19:38 +0200
                std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-07 18:38 +0300
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-07 18:06 +0200
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-07 19:35 +0300
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-08 11:29 +0200
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-08 13:34 +0300
                Re: std::map advocacy wij <wyniijj5@gmail.com> - 2024-04-08 19:18 +0800
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-08 16:32 +0300
                Re: std::map advocacy wij <wyniijj5@gmail.com> - 2024-04-09 08:40 +0800
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-09 12:48 +0300
                Re: std::map advocacy Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-09 13:16 +0200
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-08 15:30 +0200
                Re: std::map advocacy scott@slp53.sl.home (Scott Lurndal) - 2024-04-08 17:19 +0000
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-09 00:47 +0300
                Re: std::map advocacy scott@slp53.sl.home (Scott Lurndal) - 2024-04-08 23:00 +0000
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-09 02:20 +0300
                Re: std::map advocacy scott@slp53.sl.home (Scott Lurndal) - 2024-04-09 15:22 +0000
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-09 09:11 +0200
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-09 13:12 +0300
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-09 15:01 +0200
                Re: std::map advocacy Richard Damon <richard@damon-family.org> - 2024-04-08 07:10 -0400
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-08 15:45 +0200
                Re: std::map advocacy James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-04-08 19:42 -0400
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-09 09:45 +0200
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-09 13:27 +0300
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-09 15:13 +0200
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-09 18:12 +0300
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-09 18:22 +0200
                Re: std::map advocacy James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-04-10 02:24 -0400
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-11 00:07 +0300
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-11 16:18 +0300
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-11 16:39 +0300
                Re: std::map advocacy Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-11 16:21 +0200
                Re: std::map advocacy Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-11 15:31 +0200
                Re: std::map advocacy wij <wyniijj5@gmail.com> - 2024-04-11 22:40 +0800
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-11 16:55 +0200
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-11 16:13 +0300
                Re: std::map advocacy Paavo Helde <eesnimi@osa.pri.ee> - 2024-04-11 18:18 +0300
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-11 09:57 +0200
                Re: std::map advocacy David Brown <david.brown@hesbynett.no> - 2024-04-11 13:47 +0200
                Re: std::map advocacy Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-11 14:04 +0200
                Re: std::map advocacy wij <wyniijj5@gmail.com> - 2024-04-11 19:25 +0800
                Re: std::map advocacy scott@slp53.sl.home (Scott Lurndal) - 2024-04-07 16:09 +0000
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-07 19:48 +0300
                Re: std::map advocacy Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-07 19:45 +0200
                Re: std::map advocacy Paavo Helde <eesnimi@osa.pri.ee> - 2024-04-08 16:37 +0300
                Re: std::map advocacy Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-07 19:44 +0200
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-08 11:15 +0300
                Re: std::map advocacy Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-08 14:09 +0200
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-08 16:26 +0300
                Re: std::map advocacy Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-08 16:54 +0200
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-08 20:52 +0300
                Re: std::map advocacy Michael S <already5chosen@yahoo.com> - 2024-04-09 00:17 +0300
                Re: std::map advocacy Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-09 07:34 +0200
                Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-07 16:39 +0200
                Re: Ain't that beautiful ? Michael S <already5chosen@yahoo.com> - 2024-04-07 18:41 +0300
                Re: Ain't that beautiful ? Bonita Montero <Bonita.Montero@gmail.com> - 2024-04-07 19:36 +0200
                Re: Ain't that beautiful ? Paavo Helde <eesnimi@osa.pri.ee> - 2024-04-07 18:25 +0300

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