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Groups > comp.lang.c > #64986

Re: Recursion or loop, design questions

From "Morten W. Petersen" <morphex@gmail.com>
Newsgroups comp.lang.c
Subject Re: Recursion or loop, design questions
Date 2015-07-09 14:15 +0200
Organization Aioe.org NNTP Server
Message-ID <mnloih$v68$1@speranza.aioe.org> (permalink)
References <mnljil$g29$1@speranza.aioe.org> <mnlkao$veg$1@dont-email.me>

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On 09.07.2015 13:03, Richard Heathfield wrote:
> On 09/07/15 11:49, Morten W. Petersen wrote:
>> Hi there. :)
>>
>> I'm working on an XML parser and writer, located here:
>>
>> https://github.com/morphex/smash_xml
>>
>> Now I'm getting to the point where I want to parse an entire
>> XML file and get an internal representation of the XML file.
>
> I would recommend lexing it first, and then parsing the lexed list.

Yes, I was thinking of something like that.  The benefit of
that would be that the process of getting the XML to
an internal representation could be broken up into threads,
where the lexer should be simple and fast and "run ahead".

>> As for internal representation, choosing a linked-list
>> structure seems like the way to go.
>
> For a list of lexemes, yes. Normally a tree structure is preferable for
> the actual parse.

Hm, I'm not sure what you mean here?

>> However, choosing between recursion and looping is less
>> obvious, to me at least.
>
> Which choice models the problem most naturally? I'd have said recursion.
>
>>   From what I've gleaned so far, there will be function
>> overhead on every level of recursion, while a loop will
>> avoid the function overhead.
>
> That's micro-optimisation, and it's premature.

Well, say you have an XHTML file.  Most of those files aren't deeply
nested.

In a loop you can use a LIFO stack to keep track of where the program
(element nesting and context) is.

> Here's how you optimise for speed:
>
> 1) decide how fast you need it to be (in, say, MB/sec). Be realistic -
> don't say "as fast as possible" or "1TB/sec".
> 2) choose good algorithms and good data structures. Forget about stuff
> like function overhead and loop unrolling and all that until later.
> 3) write the code so that it's *readable*.
> 4) get it working, but *keep* it readable.
> 5) now, and *only* now, measure the speed. Until you have met your speed
> target, profile the program, identify the principal avoidable bottleneck
> (if you're reading from a 28kbps network connection, for example, no
> amount of tweaking the code is going to help you), and rewrite the code
> to minimise the effect of the bottleneck, *while keeping the program
> readable and correct*. When you have met your speed target, STOP.
>
> Readability is a higher priority than correctness, and correctness is a
> higher priority than speed. (It's easier to make a readable program
> correct than to make a correct program readable, and it's easier to make
> a correct program fast than to make a fast program correct.)

I agree, readability is the most important thing; I've caught many bugs
by just looking over the code.

As for finding a processing speed, maybe diving CPU clock speed by
50 instructions per character is something to go by?

I think the most important thing is good and simple data structures,
and for example I'm choosing now to just implement 4 byte internal
storage for Unicode characters and creating lots of tests, which
can contribute to predictable and stable optimizations later.

However, choosing between recursion and looping seems important,
as that's the (...) main part of the program.

I was thinking of having a big XML file read on a RAM FS and
then seeing how fast it can go.

-Morten

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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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