Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

psf @psf@oldbytes.space

12/4/2025, 7:34:45 AM

Public

#adventOfCode day 4 in #LuaLang

https://gitlab.cs.washington.edu/fidelp/advent-of-code-2025/-/blob/main/04.lua

PC - 28 ms
Raspberry Pi 2: 884 ms

Unfortunately, it will not fit in the TI-92's RAM due to how I'm representing the grid. Unless it can be optimized more....

04.lua · main · Peter Fidelman / Advent of Code 2025 · GitLab

UW CSE Gitlab

gitlab.cs.washington.edu · GitLab

psf @psf@oldbytes.space

12/4/2025, 10:50:06 PM

Public

#adventOfCode day 4 rewritten in C

https://gitlab.cs.washington.edu/fidelp/advent-of-code-2025/-/blob/main/04.c

This is a very simpleminded solution with no algorithmic fanciness: it's performing lots of repeated work in Part B.

PC - 1 ms
Raspberry Pi 2: 23 ms
#ti92 Plus: 10 seconds

It was stunning to see a result returned in just 10 seconds on the #ticalc, rather than minutes for previous days. The performance difference between an interpreter and an optimizing compiler is stark! Also, the TI-92 doesn't have a floating-point coprocessor, which makes Lua in particular struggle to run at speed.

TI-92+ graphing calculator displaying:
Part A: 1451
Part B: 8701

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