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Groups > soc.penpals > #109736 > unrolled thread

Space/Time tradeoff (was: Re: Video games are a waste of life)

Started byvallor <vallor@cultnix.org>
First post2025-07-21 06:54 +0000
Last post2025-07-21 06:45 -0700
Articles 10 — 5 participants

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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

#109736 — Space/Time tradeoff (was: Re: Video games are a waste of life)

Fromvallor <vallor@cultnix.org>
Date2025-07-21 06:54 +0000
SubjectSpace/Time tradeoff (was: Re: Video games are a waste of life)
Message-ID<me66hfFih2jU5@mid.individual.net>
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.)

-- 
-v System76 Thelio Mega v1.1 x86_64 NVIDIA RTX 3090Ti 24G
   OS: Linux 6.15.7 D: Mint 22.1 DE: Xfce 4.18 
   NVIDIA: 575.64.03 Mem: 258G
   "Peace through superior firepower."

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#109737 — Re: Space/Time tradeoff

From"Lane \"Stonehowler\" Waldby" <wichitajayhawks@msn.com>
Date2025-07-21 02:19 -0500
SubjectRe: Space/Time tradeoff
Message-ID<me67viFq4huU1@mid.individual.net>
In reply to#109736
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.

-- 
Hasbro

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#109738 — Re: Space/Time tradeoff

Fromvallor <vallor@cultnix.org>
Date2025-07-21 07:44 +0000
SubjectRe: Space/Time tradeoff
Message-ID<me69e6FptmlU1@mid.individual.net>
In reply to#109737
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.

On the Apple ][, I played Karateka, Bolo, Taxman, and
Choplifter to name a few.

-- 
-v System76 Thelio Mega v1.1 x86_64 NVIDIA RTX 3090Ti 24G
   OS: Linux 6.15.7 D: Mint 22.1 DE: Xfce 4.18 
   NVIDIA: 575.64.03 Mem: 258G
   "I have a rock garden. 3 of them died last week."

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#109739 — Re: Space/Time tradeoff

From"Lane \"Stonehowler\" Waldby" <wichitajayhawks@msn.com>
Date2025-07-21 02:48 -0500
SubjectRe: Space/Time tradeoff
Message-ID<me69n8FqdrhU1@mid.individual.net>
In reply to#109738
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.
> 
> On the Apple ][, I played Karateka, Bolo, Taxman, and
> Choplifter to name a few.
> 

Yes I've played Karateka and Choplifter.

Have you ever rescued all 64 hostages?  IIRC my best was 60 hostages 
rescued.

-- 
Hasbro

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#109740 — Re: Space/Time tradeoff

FromDoc Hammerslack <dochammerslack@creon.earth>
Date2025-07-21 07:57 +0000
SubjectRe: Space/Time tradeoff
Message-ID<TpmfQ.924119$sKi9.332598@fx14.iad>
In reply to#109739
NOTICE: The DOCTOR is ON...at Mon, 21 Jul 2025 02:48:56 -0500, Lane
\"Stonehowler\" Waldby wrote:

> 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.
>> 
>> On the Apple ][, I played Karateka, Bolo, Taxman, and Choplifter to
>> name a few.
>> 
>> 
> Yes I've played Karateka and Choplifter.
> 
> Have you ever rescued all 64 hostages?  IIRC my best was 60 hostages
> rescued.

I don't remember if I did or not.  Probably not.

-- 
Doc Hammerslack
Today is Boomtime, the 56th day of Confusion in the YOLD 3191

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#109741 — Re: Space/Time tradeoff

From"Lane \"Stonehowler\" Waldby" <wichitajayhawks@msn.com>
Date2025-07-21 03:05 -0500
SubjectRe: Space/Time tradeoff
Message-ID<me6amoFqiv4U1@mid.individual.net>
In reply to#109738
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.

-- 
Hasbro

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#109742 — Re: Space/Time tradeoff

Fromvallor <vallor@cultnix.org>
Date2025-07-21 08:25 +0000
SubjectRe: Space/Time tradeoff
Message-ID<me6bs2FptmlU2@mid.individual.net>
In reply to#109741
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.

-- 
-v System76 Thelio Mega v1.1 x86_64 NVIDIA RTX 3090Ti 24G
   OS: Linux 6.15.7 D: Mint 22.1 DE: Xfce 4.18 
   NVIDIA: 575.64.03 Mem: 258G
   "If you don't care where you are, then you ain't lost."

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#109743 — Re: Space/Time tradeoff

From"Lane \"Stonehowler\" Waldby" <wichitajayhawks@msn.com>
Date2025-07-21 04:04 -0500
SubjectRe: Space/Time tradeoff
Message-ID<me6e48Fr4v6U1@mid.individual.net>
In reply to#109742
vallor wrote:
> 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'm getting somewhere...

   *PLONK*


-- 
Hasbro

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#109744 — Re: Space/Time tradeoff

Fromsnipeco.2@gmail.com (Sn!pe)
Date2025-07-21 12:12 +0100
SubjectRe: Space/Time tradeoff
Message-ID<1rftlbx.qo0z31dcmnozN%snipeco.2@gmail.com>
In reply to#109738
vallor <vallor@cultnix.org> wrote:

>    "I have a rock garden. 3 of them died last week."

Oh no!  Say it ain't so !!

-- 
^Ï^.        Sn!pe, PTB, FIBS        My pet rock Gordon just is.

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#109745 — Re: Space/Time tradeoff

From"kaboota@kala.boo" <kaboota@kala.boo>
Date2025-07-21 06:45 -0700
SubjectRe: Space/Time tradeoff
Message-ID<MPG.42e7e4681b867e9b9896c6@news.eternal-september.org>
In reply to#109737
In article <me67viFq4huU1@mid.individual.net>, 
wichitajayhawks@msn.com says...
> 
> 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

i know

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