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| From | vallor <vallor@cultnix.org> |
|---|---|
| Newsgroups | talk.bizarre, soc.penpals |
| Subject | Space/Time tradeoff (was: Re: Video games are a waste of life) |
| Date | 2025-07-21 06:54 +0000 |
| Message-ID | <me66hfFih2jU5@mid.individual.net> (permalink) |
| References | (1 earlier) <9ba848c5-5443-4ec8-bcd3-030db1ecb89cn@googlegroups.com> <2aed3cfa-755a-4c19-b0f9-607bfae5e911n@googlegroups.com> <dc4e272e-5392-462c-8f40-1d1191fcebf6n@googlegroups.com> <u72d8s$3dim7$2@dont-email.me> <me5j0dFmse5U2@mid.individual.net> |
Cross-posted to 2 groups.
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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Re: Video games are a waste of life "Lane \"Stonehowler\" Waldby" <wichitajayhawks@msn.com> - 2025-07-20 20:21 -0500
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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