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Re: SQL filesortcc question

From Ian Collins <ian-news@hotmail.com>
Newsgroups comp.lang.c
Subject Re: SQL filesortcc question
Date 2015-08-02 10:38 +1200
Message-ID <d2502lF55b9U2@mid.individual.net> (permalink)
References (18 earlier) <55c991ac-01b7-4f79-bf36-9064e179e401@googlegroups.com> <878u9v9nhy.fsf@bsb.me.uk> <16a336f5-97c4-4846-b4e9-99083820e2d2@googlegroups.com> <lnzj2akbkj.fsf@kst-u.example.com> <8555af32-f891-45fa-aa18-fea51ccfa022@googlegroups.com>

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Malcolm McLean wrote:
>
> The other weakness is that it's an error to pass a const-qualified
> pointer to a subroutine that takes a non-const qualified pointer.

s/weakness/strength/

> This gives rise to a whole philosophy of const correctness. But
> whilst actually solving the problem of whether a variable is
> written is akin to solving the halting problem, automatically marking
> possible writes is not. That puts the burden of const where it
> belongs, at the point someone for whatever reason chooses to mark
> a variable as const, not giving programmers writing perfectly
> routine and everyday functions another thing to worry about.

You don't appear to have a grasp of what a const qualified parameter 
cost is telling the caller.  It is telling the user that the function 
won't modify the data the pointer points to.  In doing so, it saves 
programmers from having to check so they have one less thing to worry about.

-- 
Ian Collins

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SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-15 20:40 +0000
  Re: SQL filesortcc question Paavo Helde <myfirstname@osa.pri.ee> - 2015-07-15 16:08 -0500
  Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-15 17:15 -0400
    Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-15 23:22 +0000
    Re: SQL filesortcc question jacobnavia <jacob@jacob.remcomp.fr> - 2015-07-16 18:35 +0200
      Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-16 17:48 +0100
        Re: SQL filesortcc question jacobnavia <jacob@jacob.remcomp.fr> - 2015-07-16 19:38 +0200
          Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-16 19:48 +0000
            Re: SQL filesortcc question jacobnavia <jacob@jacob.remcomp.fr> - 2015-07-16 22:17 +0200
              Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-16 21:44 +0100
                Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-16 23:51 +0000
              Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-17 09:05 +1200
                Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-16 23:52 +0000
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-17 11:36 -0400
                Re: SQL filesortcc question The Doctor <doctor@doctor.nl2k.ab.ca> - 2015-07-17 22:22 +0000
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-17 18:44 -0400
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-18 11:13 +1200
              Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-16 22:06 +0100
                Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-16 23:52 +0000
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-17 01:24 +0100
                Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-17 00:26 +0000
              Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-16 23:50 +0000
          Re: SQL filesortcc question John Bode <jfbode1029@gmail.com> - 2015-07-31 13:39 -0700
        Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-16 19:48 +0000
        Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-17 09:07 +1200
        Re: SQL filesortcc question Philip Lantz <prl@canterey.us> - 2015-07-16 16:05 -0700
        Re: SQL filesortcc question David Kleinecke <dkleinecke@gmail.com> - 2015-07-16 17:28 -0700
        Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 11:13 -0700
          Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-20 19:27 +0100
            Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-21 08:46 +1200
              Re: SQL filesortcc question raltbos@xs4all.nl (Richard Bos) - 2015-07-22 15:12 +0000
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-26 11:55 +1200
              Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-25 15:01 -0700
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-26 11:51 +1200
            Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-25 10:02 -0700
              Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-27 23:35 +0100
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-28 14:16 +1200
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-28 04:49 +0100
                Re: SQL filesortcc question Martin Shobe <martin.shobe@yahoo.com> - 2015-07-27 23:25 -0500
                Re: SQL filesortcc question raltbos@xs4all.nl (Richard Bos) - 2015-07-28 09:32 +0000
                Re: SQL filesortcc question Bartc <bc@freeuk.com> - 2015-07-28 10:22 +0100
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-27 22:33 -0400
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-28 04:57 +0100
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-28 16:38 +1200
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-28 00:51 -0400
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-28 07:06 +0100
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-28 20:32 +1200
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-28 10:02 +0100
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-28 22:08 +1200
                Re: SQL filesortcc question David Kleinecke <dkleinecke@gmail.com> - 2015-07-28 18:17 -0700
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-29 12:14 -0400
                Re: SQL filesortcc question Martin Shobe <martin.shobe@yahoo.com> - 2015-07-29 11:27 -0500
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-29 13:01 -0400
                Re: SQL filesortcc question Bartc <bc@freeuk.com> - 2015-07-29 17:33 +0100
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-29 21:07 +0100
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-29 16:33 -0400
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-29 22:12 +0100
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-29 23:50 +0100
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-30 00:13 +0100
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-30 01:49 +0100
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-30 02:07 +0100
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-30 03:04 +0100
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-30 08:25 +0100
                Re: SQL filesortcc question Keith Thompson <kst-u@mib.org> - 2015-07-30 09:15 -0700
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-30 17:17 +0100
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-30 17:00 +0100
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-30 17:12 +0100
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-30 15:12 -0400
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-30 23:13 -0700
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-31 10:29 +0100
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-31 08:10 -0400
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-31 11:12 -0700
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-31 22:56 +0100
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-31 18:34 -0700
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-01 13:55 +0100
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-01 07:13 -0700
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-01 15:36 +0100
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-01 09:19 -0700
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-08-01 18:16 -0400
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-01 15:30 -0700
                Re: SQL filesortcc question Richard Damon <Richard@Damon-Family.org> - 2015-08-02 09:00 -0400
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-08-02 09:19 -0400
                Re: SQL filesortcc question raltbos@xs4all.nl (Richard Bos) - 2015-08-09 14:23 +0000
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-02 06:35 -0700
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-08-02 19:11 +0200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-02 10:28 -0700
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-08-03 09:04 +0200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-03 00:19 -0700
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-08-03 13:55 +0200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-03 07:03 -0700
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-08-03 16:53 +0200
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-06 09:19 -0700
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-09-06 21:20 +0200
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 14:07 -0700
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-09-06 12:24 +0200
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-09-06 13:49 +0100
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-09-06 15:41 +0200
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-07 07:24 -0700
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-09-07 17:04 +0200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-02 06:48 -0700
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-04 08:00 -0700
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-04 08:52 -0700
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 11:56 -0700
                Re: SQL filesortcc question Richard Damon <Richard@Damon-Family.org> - 2015-08-04 23:45 -0400
                Re: SQL filesortcc question Keith Thompson <kst-u@mib.org> - 2015-08-05 08:45 -0700
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 12:00 -0700
                Re: SQL filesortcc question Keith Thompson <kst-u@mib.org> - 2015-08-01 13:17 -0700
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-08-01 16:11 -0400
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-01 14:00 -0700
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-08-02 10:40 +1200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-01 16:20 -0700
                Re: SQL filesortcc question Rosario19 <Ros@invalid.invalid> - 2015-08-22 08:24 +0200
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-08-22 19:26 +1200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-22 05:39 -0700
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-01 13:51 -0700
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-08-02 10:38 +1200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-01 16:14 -0700
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-08-02 01:15 +0200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-01 16:24 -0700
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-08-02 02:32 +0200
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-08-02 12:57 +1200
                Re: SQL filesortcc question Keith Thompson <kst-u@mib.org> - 2015-08-01 22:23 -0700
                Re: SQL filesortcc question Robert Wessel <robertwessel2@yahoo.com> - 2015-08-02 01:21 -0500
                Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-08-02 19:21 +0200
                Re: SQL filesortcc question Robert Wessel <robertwessel2@yahoo.com> - 2015-08-02 14:05 -0500
                Re: SQL filesortcc question Robert Wessel <robertwessel2@yahoo.com> - 2015-08-02 01:24 -0500
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-01 23:56 -0700
                Re: SQL filesortcc question raltbos@xs4all.nl (Richard Bos) - 2015-08-09 14:25 +0000
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-30 14:19 +1200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-29 19:53 -0700
                Re: SQL filesortcc question Keith Thompson <kst-u@mib.org> - 2015-07-29 23:45 -0700
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-30 04:22 -0700
                Re: SQL filesortcc question Bartc <bc@freeuk.com> - 2015-07-30 13:13 +0100
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-30 13:27 +0100
                Re: SQL filesortcc question Bartc <bc@freeuk.com> - 2015-07-30 13:57 +0100
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-30 14:11 +0100
                Re: SQL filesortcc question Bartc <bc@freeuk.com> - 2015-07-30 14:39 +0100
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-07-30 15:05 +0100
                Re: SQL filesortcc question Bartc <bc@freeuk.com> - 2015-07-30 14:03 +0100
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-07-30 11:22 -0400
                Re: SQL filesortcc question Keith Thompson <kst-u@mib.org> - 2015-07-29 18:32 -0700
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-30 14:38 +1200
                Re: SQL filesortcc question Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-30 10:56 +0100
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-30 22:28 +1200
                Re: SQL filesortcc question Bartc <bc@freeuk.com> - 2015-07-30 10:57 +0100
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-03 08:02 -0700
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-03 08:33 -0700
                Re: SQL filesortcc question Richard Damon <Richard@Damon-Family.org> - 2015-08-03 20:50 -0400
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-04 04:52 -0700
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-04 06:08 -0700
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-08-04 14:20 +0100
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-04 06:45 -0700
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 12:15 -0700
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-08-03 19:09 +0100
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-04 06:09 -0700
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-08-04 14:40 +0100
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 13:24 -0700
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-09-05 21:51 +0100
                Re: SQL filesortcc question James Kuyper <jameskuyper@verizon.net> - 2015-09-05 17:16 -0400
                Re: SQL filesortcc question Keith Thompson <kst-u@mib.org> - 2015-09-05 19:59 -0700
                Re: SQL filesortcc question Richard Heathfield <rjh@cpax.org.uk> - 2015-09-06 07:51 +0100
                Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-06 17:32 -0700
            Re: SQL filesortcc question Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-25 10:04 -0700
        Re: SQL filesortcc question David Brown <david.brown@hesbynett.no> - 2015-07-21 13:23 +0200
          Re: SQL filesortcc question raltbos@xs4all.nl (Richard Bos) - 2015-07-22 15:14 +0000
          Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-25 15:25 -0700
            Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-26 11:31 +1200
              Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-25 17:10 -0700
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-26 13:29 +1200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-25 23:51 -0700
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-26 20:24 +1200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-26 03:02 -0700
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-27 09:22 +1200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-26 15:04 -0700
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-27 10:32 +1200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-26 16:49 -0700
                Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-27 21:46 +1200
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-27 04:53 -0700
                Re: SQL filesortcc question Keith Thompson <kst-u@mib.org> - 2015-07-26 14:58 -0700
                Re: SQL filesortcc question Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-26 15:15 -0700
      Re: SQL filesortcc question doctor@doctor.nl2k.ab.ca (The Doctor) - 2015-07-16 19:47 +0000
  Re: SQL filesortcc question Ian Collins <ian-news@hotmail.com> - 2015-07-16 09:55 +1200

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