Re: Programming exercise/challenge

From	Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups	comp.lang.c
Subject	Re: Programming exercise/challenge
Date	2021-01-03 09:49 -0800
Organization	A noiseless patient Spider
Message-ID	<86lfd9syfo.fsf@linuxsc.com> (permalink)
References	<86wnxwkyol.fsf@linuxsc.com> <5fcbb652$0$16505$e4fe514c@textnews.kpn.nl> <86a6tvur8x.fsf@linuxsc.com> <20201230104155.77@kylheku.com>

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Kaz Kylheku <563-365-8930@kylheku.com> writes:

> On 2020-12-30, Tim Rentsch <tr.17687@z991.linuxsc.com> wrote:
>
>> Sjouke Burry <burrynulnulfour@ppllaanneett.nnll> writes:
>>
>>> On 05.12.20 17:25, Tim Rentsch wrote:
>>>
>>>> Prompted by some recent discussion regarding 'goto' statements and
>>>> state machines, I would like to propose a programming exercise.
>>>> (It is perhaps a bit too large to be called an exercise, but not so
>>>> difficult that it deserves the label of challenge.  On the other
>>>> hand there are some constraints so maybe challenge is apropos.  In
>>>> any case somewhere in between those two bounds.)
>>>>
>>>> Short problem statement:  a C program to remove comments from C
>>>> source input.  [...]
>>>
>>> If you show yours , maybe some of us will show theirs........
>>
>> If you have been waiting for me, here it is.
>>
>> This program is basically the same as the one I wrote just before
>> posting the exercise statement, not counting some cosmetic
>> cleanup and a change so comments would be replaced by a single
>> blank.
>
> I think it's not honest to say that your program doesn't use goto.
> It just disguises it using tail calls.

Well let's see.  Some people say:

   A 'break' statement is just a goto in disguise.
   A 'continue' statement is just a goto in disguise.
   A 'while' (or do/while) is just a goto in disguise.
   A 'for' is just a (syntactically sugared?) goto in disguise.
   A 'switch' is just a (computed?) goto in disguise.
   An 'if' is just a goto in disguise.

And now we should add to that list:

   Some function calls are just gotos in disguise?

I don't think so.  My original posting said "Use no 'goto'
statements" and that is exactly what I meant.  Using 'while' or
'break' or 'continue', or any other "disguised" goto, follows
both the letter and the spirit of the stipulation, as does
using tail recursion.

Furthermore tail calls have a distinction (and advantage) that
other kinds of "disguised" gotos do not.  If a 'break' or 'while'
or 'continue', etc., is used, the program state ends up within the
same function, including the state of variables in the function.
To understand what's going on we must look for and understand how
any such variables are used and modified.  But tail calls don't
have that problem:  each function in the net of routines starts
with a clean slate, and may confidently be read in isolation of
all the others.  So the idea that a tail call is just "a goto
in disguise" doesn't hold even a tiny amount of water.

> Someone who reads your program is greatly assisted by recognizing
> the pattern that a state machine is being implemented by a network
> of tail calls,

Yes, they might.  Nothing wrong with that.

> and therefore knowing, for instance, that when start
> calls dq, that is to be understood as a control transfer that
> doesn't return (i.e. goto).

That doesn't follow.  A state transition is not synonymous with
goto.  Only people who are predisposed to think of any control
transfer as a goto will conclude that these calls are meant to be
understood as a goto.  I don't think of them as gotos, and I
certainly don't intend that other people should think of them
as gotos.  At some level just the opposite:  part of my purpose
is to offer an alternative to goto, a different way to see how
a state machine might be constructed.

> Imagine someone with no CS background trying to follow how the
> functions return back to the top level start for various input
> cases, haha!

Someone with no programming background would see all the posted
programs as so much gibberish.

Someone with some programming background but no formal education
in computer science might very well have trouble understanding
the control flow.  That sort of thing often happens when trying
to expand people's horizons.  Personally I think expanding
people's horizons is often a good thing.

> That entire tail-call-network section of the program beginning with
> the start function down to before the I/O helpers could be turned
> into a big function with labeled goto blocks.  Moreover, the
> structure would be essentially the same, about equally easy to
> follow.

So you say.  I have seen your programs that take the 'goto'
approach, and I don't think so.

> There is a clear disadvantage.  If there is no tail call elimination
> in the compiler (which is not required by the standard) the program
> needs automatic storage proprortional to the number of characters of
> the input.  This could happen even if the compiler supports tail
> calls as an optimization, but the program is compiled without
> optimization.  [...]

People who use substandard tools deserve what they get.  Setting
optimization levels is one reason projects are distributed with
makefiles.  The code I wrote works fine in the environments in
which it is meant to run, and that is all that is needed.
Writing code for brain-damaged compilers was not a requirement.

> The dogged adherence to the functional style

This is a mischaracterization.  I chose to write in a functional
style;  I did not "doggedly adhere" to it.  I have written
programs to filter out comments several times over the years,
using a variety of approaches.  In this particular case I chose
a functional style, to see what it would be like.  It worked out
well, so that's what I went with.  I often try implementing parts
of programs using a functional style.  Sometimes it works, and
sometimes it doesn't;  when it doesn't I take a different tack.

> precludes the use of
> the switch statement to make selections on input characters;

Oh nonsense.  A switch() too can serve a functional style (as you
more or less point out just a few lines down).  There is nothing
inherently imperative about switch() statements.

> so nested ternary ?: has to be used,

I chose ?: not because it has to be used, but because it gives a
better look than using switch().

> which is awkward.

That is your prejudice speaking.  It is awkward only for people
who are predisposed to think it awkward.

> C is not well geared toward this style, otherwise it would have
> an N-way functional conditional.

An overly harsh conclusion.  The high order bits map nicely
onto a functional look in languages like OCaml.  Some sort of
expression-select construct might be nice, but the level of
friction between doing that and just using ?: is pretty low.

> Besides, there are embeddeed effects:  outc(c) is evaluated for
> its side effect.  So the code is not purely functional.

Output is ALWAYS imperative.  We may see this problem as having
two parts, a recognizer and a transducer.  The recognizer part is
done in a pure functional style.  The transducer uses imperative
output functions, because that's a better fit to the C language.
(Note also that this takes away from your "dogged adherence"
accusation.)

> Though switch is an imperative construct, its use doesn't obviously
> doesn't preclude tail recursion:  [..example..]
>
> This is idiomaic and readable.

It is idiomatic.  It's also ugly.  People find such code "more
readable" mainly (or only?) because that is what they are used
to.  I have found (and there is some research that supports this)
that once people get used to it, a more concise form like the ?:
method is a better impedance match as far as ease of reading
goes.

> Also, it is free of the confusing
> inverted tests like c != EOF and c != BS.

The asymmetry of how ?: treats its operands is mildly annoying.
But that doesn't justify throwing out the baby with the
bathwater.  All programming languages have some annoying aspects.

> Incidentally, why did you do that?  That is to say, why this:
>
>>       :   c != EOF    ?  outc( c ),            start( 0 )
>>       :/* c == EOF */                          ALL_GOOD;
>
> and not this?
>
>
>> 	:   c == EOF    ?                        ALL_GOOD
>> 	:/* default */     outc( c ),            start( 0 );
>
> The answer is:  you had to, due to precedence.  [..further
> remarks regarding using parentheses..]

Like I said, the asymmetry of ?: is annoying at times.  The
program I posted is something I just sat down and wrote, almost
as fast as I could type it.  It is not what I would call a
polished program.  In a subsequent version I think the treatment
of the penultimate case and the final case can be used to
advantage, but for now I will just say the code appears pretty
much just as I first wrote it.  Also I think the funkiness of the
last two cases isn't such a big deal once one sees what is going
on.  All programming languages have their own idiosyncracies;
the idiosyncracy in C with ?: is rather minor in comparison with
some other ones.

> Anyway, from the above switch, a transformation to goto is
> simple.  [elaboration]

You strike me as someone whose mind is stuck in a rut of always
thinking of programs in terms of what goes on at the level of
machine language.  I should add that you are in good company,
as Don Knuth strikes me the same way.  I used to be that way
too, but I gave it up.  I still can think in terms of what's
going on at the level of machine language, but mostly I don't.
I consider the change a big improvement.

Incidently, I note that none of the programs you posted made any
effort to follow either of the two stated requirements (no goto
statements, no overly long functions).  If you never venture
outside of your rut, very probably your views will never change.
My hope is that other people will do better.

Thread

Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-05 08:25 -0800
  Re: Programming exercise/challenge Sjouke Burry <burrynulnulfour@ppllaanneett.nnll> - 2020-12-05 17:33 +0100
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 11:58 -0800
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-30 09:40 -0800
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-30 18:20 +0000
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-31 01:04 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-02 22:05 +0300
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-02 14:48 -0500
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-02 19:17 -0800
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-02 19:04 -0800
      Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-30 21:44 +0000
        Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-31 02:54 +0000
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-03 09:49 -0800
          Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-04 00:15 +0300
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-03 21:57 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-03 23:00 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-04 00:00 +0000
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-04 20:04 -0800
              Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-05 07:15 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-07 22:30 -0800
          Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-04 18:42 +0000
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-04 21:23 +0000
              Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-04 23:41 +0000
  Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 16:39 +0000
    Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 16:58 +0000
      Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 17:08 +0000
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-05 17:11 +0000
        Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 17:24 +0000
          Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-05 17:52 +0000
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 18:30 +0000
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-05 19:56 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-06 14:51 +0000
      Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-05 17:49 +0000
        Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 18:34 +0000
      Re: Programming exercise/challenge Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-05 19:40 +0100
        Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 18:47 +0000
          Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 23:19 +0000
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-05 23:56 +0000
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-08 02:26 +0000
              Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-08 16:04 +0300
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:39 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-12 23:34 +0300
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:28 -0800
                Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-29 10:34 -0600
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 20:05 -0800
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 06:03 -0800
  Re: Programming exercise/challenge dfs <nospam@dfs.com> - 2020-12-05 13:58 -0500
    Re: Programming exercise/challenge Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-12-05 21:37 +0000
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 06:13 -0800
        Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-06 18:00 +0100
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 12:31 -0800
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 06:26 -0800
  Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-05 23:32 +0100
    Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-06 17:18 +0100
      Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-06 17:51 +0100
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-06 22:27 +0000
        Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-07 09:37 +0100
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 07:36 -0500
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 22:49 -0800
  Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-06 17:51 +0000
    Re: Programming exercise/challenge dfs <nospam@dfs.com> - 2020-12-06 13:03 -0500
      Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-06 23:53 +0000
    Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-06 19:53 +0000
      Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-06 23:38 +0000
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-07 00:17 +0000
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 02:09 +0000
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-07 01:03 -0800
      Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 12:05 +0000
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-07 12:25 +0000
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 13:33 +0000
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-07 14:18 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-07 14:31 +0000
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 12:58 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:03 -0800
              Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-07 07:12 -0800
              Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 21:55 +0000
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 22:59 -0800
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 22:55 -0800
            Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 07:45 -0500
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:26 -0800
                Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-24 12:24 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-24 17:19 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-27 05:16 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-27 04:17 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-27 08:27 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 19:18 -0800
        Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-07 05:15 -0800
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 13:42 +0000
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 22:53 -0800
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 01:49 -0800
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-10 22:35 +0000
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 21:17 -0800
              Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-12 21:44 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:46 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-13 12:21 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:35 -0800
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2020-12-31 00:46 +0100
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2020-12-31 00:52 +0100
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-31 00:34 -0800
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2021-01-01 08:23 +0100
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2021-01-01 10:09 +0100
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2021-01-01 11:38 +0100
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-01 08:24 -0800
      Re: Programming exercise/challenge "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2020-12-07 07:03 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-08 02:16 +0300
          Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 02:39 +0300
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:18 -0800
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:17 -0800
  Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-08 00:27 +0300
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:20 -0800
  Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-07 13:44 -0800
    Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-07 14:01 -0800
    Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 22:16 +0000
      Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-07 15:10 -0800
        Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 01:07 +0000
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 00:34 +0000
    Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-08 18:17 -0800
      Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-09 00:56 -0800
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 02:30 -0800
          Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-09 15:14 -0800
            Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-09 15:44 -0800
            Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-12 23:56 +0300
              Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-12 13:29 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:46 +0300
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-12 13:59 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 14:17 +0300
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-13 12:58 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-13 20:57 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-14 20:44 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-23 11:15 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-23 23:45 +0300
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-23 21:36 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-24 09:11 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 15:30 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-24 23:18 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-24 23:56 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-28 12:01 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 19:31 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 14:47 -0800
  Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-08 01:59 +0300
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:26 -0800
  Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 19:02 -0500
    Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 01:15 +0000
      Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 20:38 -0500
        Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 02:19 +0000
    Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 11:44 +0000
      Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-08 07:32 -0500
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 14:40 +0000
          Re: Programming exercise/challenge "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2020-12-08 06:52 -0800
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 17:31 +0000
              Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-08 20:16 +0000
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 20:48 +0000
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-08 15:34 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 02:54 +0300
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 12:33 +0300
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 12:43 +0300
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-09 01:52 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:28 +0300
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-12 21:40 +0000
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-12 13:48 -0800
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-09 01:46 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:29 -0800
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-08 10:45 -0500
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 17:16 +0000
      Re: Programming exercise/challenge "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2020-12-08 06:39 -0800
  Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-07 17:48 -0800
    Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 21:03 -0500
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 03:02 -0800
        Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 08:02 -0500
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 16:49 +0000
            Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 13:33 -0500
              Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 19:57 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-10 01:45 +0000
                Re: Programming exercise/challenge Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-12-10 02:15 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:24 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 21:57 -0500
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-10 03:32 +0000
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-10 08:19 -0500
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:04 -0800
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-24 19:34 +0000
    Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 02:22 +0000
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 03:04 -0800
        Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 11:59 +0000
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 08:11 -0500
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 00:02 -0800
            Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-10 15:12 +0000
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 10:36 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-10 22:11 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-10 23:34 +0000
                Re: Programming exercise/challenge "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2020-12-10 20:11 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 21:06 -0800
    Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 03:03 +0300
      Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-08 21:21 -0500
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 12:50 +0300
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 08:16 -0500
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:32 -0800
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-09 12:21 +0000
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-02 19:15 +0000
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-07 01:54 -0800
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-22 22:36 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-22 23:07 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-22 20:27 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-23 13:05 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 07:45 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-23 16:49 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 11:22 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-23 16:53 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 09:55 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 21:35 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-24 18:17 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 07:57 -0800
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 11:28 -0800
  Re: Programming exercise/challenge "jfbod...@gmail.com" <jfbode1029@gmail.com> - 2020-12-08 11:30 -0800
    Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-08 20:31 +0000
      Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-08 22:17 +0100
    Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-08 22:15 +0100
      Re: Programming exercise/challenge "jfbod...@gmail.com" <jfbode1029@gmail.com> - 2020-12-08 13:28 -0800
        Re: Programming exercise/challenge "jfbod...@gmail.com" <jfbode1029@gmail.com> - 2020-12-09 12:05 -0800
          Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:04 +0300
      Re: Programming exercise/challenge Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-12-08 21:38 +0000
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 03:25 -0800
  Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 01:00 +0000
    Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 03:09 +0000
      Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:35 +0300
        Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-12 22:57 +0000
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-12 23:43 +0000
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:47 -0800
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 23:27 -0800
              Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-13 14:44 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:47 -0800
  Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 03:36 -0800
    Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 14:51 +0300
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 11:35 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-10 02:33 +0300
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 00:05 -0800
            Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-10 14:59 +0300
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 20:32 -0800
          Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-12 23:45 +0300
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:24 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:17 +0300
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:23 -0800
    Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-09 19:31 +0000
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 12:01 -0800
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 12:25 -0800
  Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-23 01:00 -0600
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 14:34 -0800
      Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-26 23:03 -0600
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-27 06:29 -0800
          Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-28 11:52 -0600
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 00:38 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-28 15:29 +0300
          Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-28 17:12 -0600
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-28 23:54 -0800
        Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-29 10:26 -0600
          Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-29 10:37 -0600
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 19:59 -0800
  Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-30 09:17 -0800
    Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-31 16:54 +0300
      Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-31 09:16 -0600
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-31 15:56 +0000
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-07 02:41 -0800
        Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-31 13:01 -0800
        Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-31 14:15 -0800
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-01 08:03 -0800
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-01 07:42 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-02 21:59 +0300
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-02 14:52 -0500
            Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-01-02 12:30 -0800
            Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-02 18:17 -0500
              Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-02 19:22 -0500
              Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-02 17:48 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-02 22:35 -0500
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-02 18:02 -0800
            Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-03 00:42 -0800
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-04 20:12 -0800
  Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-04 07:04 -0800
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-04 20:22 -0800
      Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 04:24 -0800
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-05 06:22 -0800
          Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 08:55 -0800
            Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-05 20:22 +0300
              Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-05 20:27 +0300
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-05 14:20 -0800
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-05 17:23 +0000
              Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 10:18 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-05 18:57 +0000
              Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 12:58 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-05 17:31 -0500
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-05 17:50 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 19:33 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-05 23:02 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 21:00 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-06 07:42 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-06 08:55 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-06 13:29 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-06 14:09 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-06 22:11 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-07 03:10 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-07 06:40 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-09 06:27 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-10 04:32 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-11 06:58 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-11 14:40 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-15 09:46 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-17 04:13 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-17 14:18 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-17 18:02 +0000
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-17 15:12 -0500
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-17 21:39 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-20 10:57 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-21 11:37 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-22 00:30 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-22 09:09 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-22 13:47 -0500
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-22 19:00 +0000
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-22 19:42 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-22 21:16 +0000
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-22 16:41 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 17:46 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 09:51 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-23 18:38 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 04:52 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-23 15:45 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 09:04 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-23 23:10 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 15:39 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-23 15:59 +0000
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-25 11:40 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 09:47 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-23 18:32 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 17:26 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-24 01:55 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 08:40 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 20:51 -0800
                Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-24 02:28 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-24 03:49 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-24 15:38 +0300
                Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-24 14:04 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-25 07:26 -0800
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-25 16:58 +0100
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2021-01-25 09:14 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 07:32 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-27 16:24 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-28 00:11 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-28 12:25 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 06:18 -0500
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-28 16:54 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 09:15 -0500
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-28 20:07 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 15:58 -0500
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-29 00:07 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 16:17 -0500
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-29 00:03 +0300
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-01-28 03:37 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-28 22:50 +0000
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-30 23:14 +0300
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-30 20:49 +0000
                Re: Programming exercise/challenge M Joshua Ryan <luser.droog@gmail.com> - 2021-01-28 00:05 -0600
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-27 11:51 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-25 17:22 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-25 12:21 -0800
                Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-25 14:27 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-25 19:41 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-26 04:46 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-26 06:30 -0800
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-26 15:46 +0100
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-27 03:43 -0800
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-27 13:43 +0100
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-27 17:51 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-27 11:02 -0500
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-27 17:03 +0100
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-01-27 07:21 -0800
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-27 17:09 +0100
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-27 17:04 +0000
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-28 10:41 +0100
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-28 18:25 +0000
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-28 10:44 +0100
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-28 21:33 +0000
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-29 10:39 +0100
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-25 23:52 -0500
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-26 11:37 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 08:04 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-27 19:16 +0300
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 23:38 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 13:43 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-28 03:16 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 06:42 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-28 13:01 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-06 13:35 -0500
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-06 19:27 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-06 21:25 +0000
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-06 00:37 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-06 04:34 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-06 11:54 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-05 15:28 -0800
            Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-05 13:27 -0500
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-05 15:43 -0800
          Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 20:10 -0800
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-06 23:07 -0800

csiph-web