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Re: std::map advocacy

From Richard Damon <richard@damon-family.org>
Newsgroups comp.lang.c++
Subject Re: std::map advocacy
Date 2024-04-08 07:10 -0400
Organization i2pn2 (i2pn.org)
Message-ID <uv0jb2$ck7p$3@i2pn2.org> (permalink)
References (10 earlier) <uuu98b$2qou0$1@dont-email.me> <20240407183854.00000797@yahoo.com> <uuuga5$2s7td$2@dont-email.me> <20240407193505.00004d17@yahoo.com> <uv0dd7$3diif$1@dont-email.me>

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On 4/8/24 5:29 AM, David Brown wrote:
> On 07/04/2024 18:35, Michael S wrote:
> 
>> Partially balanced binary trees, like those used by std::map and by its
>> relatives, are among the most predictable data structures out here.
>> Certainly they are far more predictable than generic hash that in the
>> worst case degenerates into O(N).
>> OTOH, in std::map of given size the difference in worst access time
>> between perfectly balanced case and most unbalanced case is only
>> 2x. And that applies not just for lookup, but for insertion and
>> deletion as well.
>>
> 
> As far as I know, details of how containers such as std::map are 
> implemented are left to the implementation - they are not guaranteed by 
> the standards.
> 
> Different types of systems have different needs.  C++ supports a huge 
> range of uses, and for some of them, many parts of the standard library 
> are simply out of the question.  The point was just that claims such as 
> Bonita's that "it is impossible to use C++ without exception[s]", or 
> that if you don't use the standard library you are "missing most of 
> C++", are just ignorant nonsense.  People can choose what they need 
> based on a range of requirements and preferences, and that's exactly 
> what we want from a general-purpose language.
> 

The Standard gives complexity guarantees for some operations on most 
containers which largely limit what sort of method can be used by each 
of them.

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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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