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Re: Space/Time tradeoff

Cross-posted to 4 groups.

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On Mon, 21 Jul 2025 03:05:44 -0500, "Lane \"Stonehowler\" Waldby"
<wichitajayhawks@msn.com> wrote in <me6amoFqiv4U1@mid.individual.net>:

> vallor wrote:
>> On Mon, 21 Jul 2025 02:19:14 -0500, "Lane \"Stonehowler\" Waldby"
>> <wichitajayhawks@msn.com> wrote in <me67viFq4huU1@mid.individual.net>:
>> 
>>> vallor wrote:
>>>> On Sun, 20 Jul 2025 20:21:17 -0500, "Lane \"Stonehowler\" Waldby"
>>>> <wichitajayhawks@msn.com> wrote in
>>>> <me5j0dFmse5U2@mid.individual.net>:
>>>>
>>>>> vallor wrote:
>>>>>> On Tue, 20 Jun 2023 18:35:04 -0700 (PDT), entwickeln14 wrote:
>>>>>>
>>>>>>> On Saturday, June 17, 2023 at 8:07:31 PM UTC-4, nikolai kingsley
>>>>>>> wrote:
>>>>>>>> "a while ago" being around 1988.
>>>>>>>
>>>>>>> Hello.
>>>>>>> What's new?
>>>>>>>
>>>>>>> e
>>>>>>
>>>>>> hi
>>>>>>
>>>>>> In 8th grade, I wrote a game on the Commodore PET.  You would
>>>>>> maneuver your avatar (an asterisk) through a landscape of
>>>>>> constantly-changing random blocks appearing and disappearing.
>>>>>>
>>>>>> Kind of a funky maze game.  Would have been around 1981.
>>>>>>
>>>>> Lies.  You never did that. You can't even count to 1981.
>>>>
>>>> Not only did I write it, I optimized the movement keys by using the
>>>> numeric keypad numbers as indices for two arrays that held +/-1
>>>> values for x and y.
>>>>
>>>> Was a lot faster than the "if then" chain I was using previously.
>>>>
>>>> (This was in PET BASIC, of course.)
>>>>
>>>> Recently I asked ChatGPT about the principle I'd used, and it called
>>>> it "time for space trade off".  Posted about it in comp.theory in
>>>> passing.
>>>>
>>>> Message-ID: <101bvbm$58on$2@dont-email.me>
>>>>
>>>> It's pretty obvious that pre-computing values can speed things up.
>>>> Orthogonally-related, I once made a lookup table for IPv4 unicast
>>>> addresses whose decimal representation was an md5 hash.
>>>>
>>>> -rw-rw-r-- 1 xxx xxx  75161927360 May  6  2016 md5_ipv4_rainbow.b
>>>>
>>>> (Turns out, back in the days of Usenet yore, certain NSP's didn't
>>>> salt their posting-host hashes.  Used it to figure out who was
>>>> posting as certain socks in a.u.k.)
>>>>
>>> Yes and you noticed a fatal flaw on line 262 and decided that you
>>> would do it again some day and didn't make a single penny off of it.
>>>
>>> One of the oldbies here wrote "Bilestoad," and I'm certain you've
>>> heard of that.  If not, wikipedia.org will quickly bring you up to
>>> speed on it.
>> 
>> Impressive.  Never ran across that one.
> 
> Meaningless.  You're full of shit, Creon. You're a real pussy for lying
> about it too.

Vague insults will get you nowhere.

I have no reason to lie.

You, however, do.

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Space/Time tradeoff (was: Re: Video games are a waste of life) vallor <vallor@cultnix.org> - 2025-07-21 06:54 +0000
  Re: Space/Time tradeoff "Lane \"Stonehowler\" Waldby" <wichitajayhawks@msn.com> - 2025-07-21 02:19 -0500
    Re: Space/Time tradeoff vallor <vallor@cultnix.org> - 2025-07-21 07:44 +0000
      Re: Space/Time tradeoff "Lane \"Stonehowler\" Waldby" <wichitajayhawks@msn.com> - 2025-07-21 02:48 -0500
        Re: Space/Time tradeoff Doc Hammerslack <dochammerslack@creon.earth> - 2025-07-21 07:57 +0000
      Re: Space/Time tradeoff "Lane \"Stonehowler\" Waldby" <wichitajayhawks@msn.com> - 2025-07-21 03:05 -0500
        Re: Space/Time tradeoff vallor <vallor@cultnix.org> - 2025-07-21 08:25 +0000
          Re: Space/Time tradeoff "Lane \"Stonehowler\" Waldby" <wichitajayhawks@msn.com> - 2025-07-21 04:04 -0500
      Re: Space/Time tradeoff snipeco.2@gmail.com (Sn!pe) - 2025-07-21 12:12 +0100
    Re: Space/Time tradeoff "kaboota@kala.boo" <kaboota@kala.boo> - 2025-07-21 06:45 -0700

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