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Groups > comp.lang.c > #65379

Re: Recursion or loop, design questions

From glen herrmannsfeldt <gah@ugcs.caltech.edu>
Newsgroups comp.lang.c
Subject Re: Recursion or loop, design questions
Date 2015-07-12 00:36 +0000
Organization Aioe.org NNTP Server
Message-ID <mnscqd$en6$1@speranza.aioe.org> (permalink)
References (1 earlier) <mnn1eu$hm3$1@flame.srcf.net> <kfnbnfi24vx.fsf@x-alumni2.alumni.caltech.edu> <mnr92m$sfc$1@dont-email.me> <703f15fe-30b8-48a6-a51a-04862ca26af7@googlegroups.com> <lnio9qpb1z.fsf@kst-u.example.com>

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Keith Thompson <kst-u@mib.org> wrote:
> Malcolm McLean <malcolm.mclean5@btinternet.com> writes:
(snip)

>> It's not obvious what recursive calls are tail recursive and which are
>> not. You have to have a deep understanding of how the optimiser works
>> and not to be coding at 4 O clock in the morning to be sure that 
>> you code won't be catastrophically slow.
 
> I believe that some functional languages (perhaps most of them) make
> specific guarantees about tail recursion optimization.  I don't know the
> details, but it's possible and reasonable to rely on tail r secursion to
> be optimized to iteration.

> For a language (like C) that doesn't make such guarantees, you may or
> may not find it reasonable to depend on the compiler's behavior.

Yes.  In some cases, you can make a simple change to handle the tail
recursion case. That is, do it explicitly instead of depending on the
compiler to figure it out. I suppose that makes the result somewhere
between iterative and recursive, in implementation.

But for recursive descent compilers, that usually doesn't come up.

For that one case, it seems to me, that direct recursion is fine.

Though that still leaves the problem of what to do when there is
an error in the input.

-- glen

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Thread

Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 12:49 +0200
  Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 12:03 +0100
    Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 14:15 +0200
      Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 13:49 +0100
        Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 15:15 +0200
          Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 14:25 +0100
            Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 15:36 +0200
              Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 14:51 +0100
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 16:02 +0200
              Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-09 20:48 +0100
          Re: Recursion or loop, design questions James Kuyper <jameskuyper@verizon.net> - 2015-07-09 09:54 -0400
            Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 15:08 +0100
              Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 16:16 +0200
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 15:18 +0100
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 16:24 +0200
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-09 20:31 +0100
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 21:42 +0200
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-10 00:57 +0100
        Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-09 20:39 +0100
          Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 21:44 +0100
          Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-09 22:50 +0100
    Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-09 13:49 +0100
      Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 13:52 +0100
        Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 15:26 +0200
          Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 14:28 +0100
  Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-09 05:28 -0700
    Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 15:09 +0200
      Re: Recursion or loop, design questions "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-07-09 09:25 -0700
        Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 18:41 +0200
          Re: Recursion or loop, design questions James Kuyper <jameskuyper@verizon.net> - 2015-07-10 11:52 -0400
            Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-10 18:44 +0200
              Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-10 18:52 +0100
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-10 20:34 +0200
            Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-10 11:50 -0700
              Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-10 20:56 +0200
              Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-10 13:30 -0700
                Re: Recursion or loop, design questions Philip Lantz <prl@canterey.us> - 2015-07-11 10:51 -0700
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-11 16:07 -0700
                Re: Recursion or loop, design questions Philip Lantz <prl@canterey.us> - 2015-07-12 00:20 -0700
              Re: Recursion or loop, design questions gordonb.j93iw@burditt.org (Gordon Burditt) - 2015-07-11 21:26 -0500
      Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-09 10:08 -0700
        Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 19:19 +0200
          Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-09 19:11 +0100
            Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 21:28 +0200
  Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-09 13:41 +0100
    Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 15:22 +0200
  Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 18:45 +0200
  Re: Recursion or loop, design questions glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-07-09 18:05 +0000
    Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-11 07:06 -0700
      Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-11 15:51 -0700
        Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-15 09:36 -0700
          Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-15 10:49 -0700
          Re: Recursion or loop, design questions Robert Wessel <robertwessel2@yahoo.com> - 2015-07-15 13:05 -0500
            Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 10:28 -0700
              Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-20 12:41 -0700
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-20 21:37 +0100
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-24 13:05 -0700
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-24 15:07 -0700
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-30 12:42 -0700
              Re: Recursion or loop, design questions Robert Wessel <robertwessel2@yahoo.com> - 2015-07-24 15:38 -0500
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-30 12:39 -0700
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-30 22:35 -0700
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-02 07:09 -0700
                Re: Recursion or loop, design questions Robert Wessel <robertwessel2@yahoo.com> - 2015-08-02 14:43 -0500
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-03 09:48 -0700
  Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-09 21:23 +0200
  Re: Recursion or loop, design questions Andrew Cooper <amc96@cam.ac.uk> - 2015-07-10 00:52 +0100
    Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-10 01:28 +0100
      Re: Recursion or loop, design questions Phil Carmody <pc+usenet@asdf.org> - 2015-07-12 13:20 +0300
        Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-12 11:39 +0100
          Re: Recursion or loop, design questions David Kleinecke <dkleinecke@gmail.com> - 2015-07-12 10:28 -0700
          Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-13 08:17 +1200
            Re: Recursion or loop, design questions David Brown <david.brown@hesbynett.no> - 2015-07-21 14:46 +0200
              Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-25 19:27 -0700
          Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-07-13 21:16 +0000
    Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-10 08:34 +0100
      Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-10 00:46 -0700
      Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-10 12:35 +0200
        Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-10 12:47 +0100
          Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-10 14:29 +0200
    Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-11 06:36 -0700
      Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-11 07:16 -0700
        Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-15 14:23 -0700
          Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-15 15:27 -0700
            Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 19:27 -0700
      Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-11 15:27 +0100
        Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-11 08:00 -0700
          Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-11 15:46 -0700
            Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-11 16:01 -0700
            Re: Recursion or loop, design questions glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-07-12 00:36 +0000
          Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-15 13:55 -0700
            Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-15 14:12 -0700
              Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 19:45 -0700
        Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-15 14:34 -0700
          Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-15 15:37 -0700
            Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-16 10:07 +0100
              Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-16 10:18 +0100
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-16 13:35 +0100
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-16 21:10 -0700
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-17 13:55 +0100
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-17 11:16 -0700
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-17 11:25 -0700
                Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-17 20:51 +0100
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-17 13:48 -0700
                Re: Recursion or loop, design questions David Brown <david.brown@hesbynett.no> - 2015-07-21 15:12 +0200
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-21 10:56 -0700
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-21 19:43 +0100
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-21 12:52 -0700
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-21 21:17 +0100
                Re: Recursion or loop, design questions David Brown <david.brown@hesbynett.no> - 2015-07-21 23:58 +0200
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-22 20:39 +0100
                Re: Recursion or loop, design questions Richard Damon <Richard@Damon-Family.org> - 2015-07-24 00:54 -0400
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-24 09:06 +0100
                Re: Recursion or loop, design questions Richard Damon <Richard@Damon-Family.org> - 2015-07-24 08:04 -0400
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-24 13:48 +0100
                Re: Recursion or loop, design questions Richard Damon <Richard@Damon-Family.org> - 2015-07-25 14:02 -0400
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-30 13:41 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-02 15:41 +0200
                Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-08-02 21:51 +0000
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-03 01:20 +0200
                Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-08-04 10:54 +0000
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-04 06:02 -0700
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-08-04 14:03 +0100
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-04 11:36 -0700
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-04 11:21 -0700
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-04 12:18 -0700
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-04 13:19 -0700
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-04 13:35 -0700
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-08-04 21:40 +0100
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-04 13:51 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-04 22:57 +0200
                Re: Recursion or loop, design questions David Brown <david.brown@hesbynett.no> - 2015-08-05 08:45 +0200
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-04 14:19 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-04 23:22 +0200
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-04 14:28 -0700
                Language (was: Re: Recursion or loop, design questions) "Morten W. Petersen" <morphex@gmail.com> - 2015-08-04 23:35 +0200
                Re: Language (was: Re: Recursion or loop, design questions) Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-04 14:45 -0700
                Re: Language "Morten W. Petersen" <morphex@gmail.com> - 2015-08-04 23:55 +0200
                Re: Language (was: Re: Recursion or loop, design questions) fir <profesor.fir@gmail.com> - 2015-08-04 16:44 -0700
                Re: Language (was: Re: Recursion or loop, design questions) fir <profesor.fir@gmail.com> - 2015-08-04 17:18 -0700
                Re: Language (was: Re: Recursion or loop, design questions) fir <profesor.fir@gmail.com> - 2015-08-05 01:32 -0700
                Re: Language Richard Heathfield <rjh@cpax.org.uk> - 2015-08-05 09:51 +0100
                Re: Language Richard Heathfield <rjh@cpax.org.uk> - 2015-08-05 12:55 +0100
                Re: Language Gareth Owen <gwowen@gmail.com> - 2015-08-05 19:12 +0100
                Re: Language Richard Heathfield <rjh@cpax.org.uk> - 2015-08-06 17:09 +0100
                Re: Language luser droog <luser.droog@gmail.com> - 2015-08-06 15:10 -0700
                Re: Language Richard Heathfield <rjh@cpax.org.uk> - 2015-08-07 09:48 +0100
                Re: Language luser droog <luser.droog@gmail.com> - 2015-08-07 13:37 -0700
                Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-08-06 10:54 +0000
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-06 13:32 +0200
                Re: Recursion or loop, design questions James Kuyper <jameskuyper@verizon.net> - 2015-08-06 11:06 -0400
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-06 11:52 -0700
                Re: Recursion or loop, design questions David Brown <david.brown@hesbynett.no> - 2015-08-06 21:19 +0200
                Re: Recursion or loop, design questions James Kuyper <jameskuyper@verizon.net> - 2015-08-06 17:59 -0400
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-06 15:54 -0700
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-06 12:56 -0700
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-07 23:45 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-08 09:27 +0200
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-08 01:09 -0700
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-08 01:34 -0700
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-08-08 13:00 -0700
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-08 14:22 -0700
                Re: Recursion or loop, design questions David Kleinecke <dkleinecke@gmail.com> - 2015-08-08 16:12 -0700
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-08-08 17:31 -0700
                Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-08-09 13:34 +0000
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-09 08:38 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-09 09:31 +0200
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-09 01:52 -0700
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-06 04:40 -0700
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-25 20:19 -0700
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-25 23:59 -0700
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-30 15:53 -0700
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-25 19:43 -0700
                Re: Recursion or loop, design questions David Kleinecke <dkleinecke@gmail.com> - 2015-07-25 20:05 -0700
                Re: Recursion or loop, design questions Richard Heathfield <rjh@cpax.org.uk> - 2015-07-27 23:53 +0100
                Re: Recursion or loop, design questions fir <profesor.fir@gmail.com> - 2015-08-03 01:51 -0700
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-03 10:04 -0700
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-17 21:34 +0100
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-17 13:52 -0700
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-17 21:57 +0100
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-18 10:44 +0100
                Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-18 11:00 +0100
                Re: Recursion or loop, design questions Robert Wessel <robertwessel2@yahoo.com> - 2015-07-18 05:25 -0500
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-18 14:26 +0100
                Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-18 17:38 +0100
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-18 10:05 -0700
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-18 21:31 +0100
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-18 14:28 -0700
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-18 15:01 -0700
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-18 15:39 -0700
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-18 15:44 -0700
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-18 15:55 -0700
                Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-19 10:58 +1200
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-18 16:26 -0700
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-18 17:23 -0700
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-18 18:04 -0700
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-19 00:03 -0700
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-19 13:30 +0100
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-19 08:45 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-19 20:59 +0200
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-19 21:19 +0200
                Re: Recursion or loop, design questions Les Cargill <lcargill99@comcast.com> - 2015-07-20 07:23 -0500
                Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-07-19 21:11 +0000
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 15:37 -0700
                Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-08-09 13:55 +0000
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-09-05 11:22 -0700
                Re: Recursion or loop, design questions Gareth Owen <gwowen@gmail.com> - 2015-07-19 17:22 +0100
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-19 10:25 -0700
                Re: Recursion or loop, design questions Robert Wessel <robertwessel2@yahoo.com> - 2015-07-19 03:15 -0500
                Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-19 10:36 +0100
                Re: Recursion or loop, design questions Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-07-19 12:45 -0400
                Re: Recursion or loop, design questions Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-07-19 13:05 -0400
                Re: Recursion or loop, design questions Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-07-19 13:09 -0400
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-19 10:40 -0700
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-19 22:31 +0100
                Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-08-09 14:05 +0000
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-08-09 21:22 +0100
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-09 16:14 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-10 05:39 +0200
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-10 01:40 -0700
                Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-08-10 21:03 +1200
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-10 03:16 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-10 12:16 +0200
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-08-10 03:36 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-10 12:45 +0200
                Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-08-22 14:07 +0000
                Re: Recursion or loop, design questions raltbos@xs4all.nl (Richard Bos) - 2015-08-22 14:07 +0000
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-19 02:47 -0700
                Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-19 22:23 +1200
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-19 05:01 -0700
                Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-20 09:55 +1200
                Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-19 23:13 +0100
                Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-20 10:19 +1200
                Re: Recursion or loop, design questions Robert Wessel <robertwessel2@yahoo.com> - 2015-07-19 17:21 -0500
                Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-20 00:25 +0100
                Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-20 11:45 +1200
                Re: Recursion or loop, design questions Robert Wessel <robertwessel2@yahoo.com> - 2015-07-20 02:34 -0500
                Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-20 10:52 +0100
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-20 05:31 -0700
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-19 22:16 -0700
                Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-20 17:24 +1200
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-19 22:36 -0700
                Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-20 21:07 +1200
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-20 02:51 -0700
                Re: Recursion or loop, design questions Les Cargill <lcargill99@comcast.com> - 2015-07-19 10:12 -0500
                Re: Recursion or loop, design questions Robert Wessel <robertwessel2@yahoo.com> - 2015-07-19 16:54 -0500
                Re: Recursion or loop, design questions Les Cargill <lcargill99@comcast.com> - 2015-07-20 12:34 -0500
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-23 07:28 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-27 11:08 +0200
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-30 15:45 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-02 14:59 +0200
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-08-04 08:40 -0700
                Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-08-04 23:05 +0200
                Re: Recursion or loop, design questions Keith Thompson <kst-u@mib.org> - 2015-07-19 12:46 -0700
                Re: Recursion or loop, design questions Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-19 12:57 -0700
                Re: Recursion or loop, design questions Gareth Owen <gwowen@gmail.com> - 2015-07-19 21:16 +0100
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 15:50 -0700
                Re: Recursion or loop, design questions James Kuyper <jameskuyper@verizon.net> - 2015-07-18 09:13 -0400
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-18 15:04 +0100
                Re: Recursion or loop, design questions James Kuyper <jameskuyper@verizon.net> - 2015-07-18 12:40 -0400
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 16:27 -0700
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-18 14:26 +0100
                Re: Recursion or loop, design questions James Kuyper <jameskuyper@verizon.net> - 2015-07-18 09:58 -0400
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-18 15:24 +0100
                Re: Recursion or loop, design questions Richard Damon <Richard@Damon-Family.org> - 2015-07-18 10:29 -0400
                Re: Recursion or loop, design questions glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-07-18 17:32 +0000
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 15:28 -0700
                Re: Recursion or loop, design questions glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-07-20 22:58 +0000
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-23 03:13 -0700
                Re: Recursion or loop, design questions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-07-18 21:49 +0100
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 15:12 -0700
                Re: Recursion or loop, design questions "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-07-20 15:21 -0700
                Re: Recursion or loop, design questions "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-07-20 15:23 -0700
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-23 03:46 -0700
                Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-23 03:31 -0700
            Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-21 04:08 -0700
  Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-11 08:50 -0700
    Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-11 18:43 +0200
      Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-11 18:54 +0200
        Re: Recursion or loop, design questions James Kuyper <jameskuyper@verizon.net> - 2015-07-11 13:06 -0400
          Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-12 23:45 +0200
            Re: Recursion or loop, design questions James Kuyper <jameskuyper@verizon.net> - 2015-07-12 17:48 -0400
              Re: Recursion or loop, design questions "Morten W. Petersen" <morphex@gmail.com> - 2015-07-13 01:27 +0200
      Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-11 19:39 +0100
      Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-11 14:51 -0700
        Re: Recursion or loop, design questions Bartc <bc@freeuk.com> - 2015-07-11 23:51 +0100
          Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-15 08:04 -0700
        Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-16 09:36 +1200
          Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-20 10:37 -0700
            Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-21 20:55 +1200
              Re: Recursion or loop, design questions Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-23 07:39 -0700
      Re: Recursion or loop, design questions Ian Collins <ian-news@hotmail.com> - 2015-07-16 09:41 +1200

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