Hacker News on Sunday, 30 November 2025

Advent of Code 2025(adventofcode.com)

1156 points by vismit2000 11 months ago | 369 comments

The About page for Advent of Code 2025, an annual Advent calendar of small programming puzzles solvable in any language, with general tips for participants.

Show HN: Boing(boing.greg.technology)

688 points by gregsadetsky 11 months ago | 135 comments

An interactive web toy showing a red ball on a spring that you can pull and release to make it boing, with a counter of boings.

Writing a good Claude.md(humanlayer.dev)

679 points by objcts 11 months ago | 263 comments

HumanLayer blog post by Kyle Mistele giving guidance on writing an effective CLAUDE.md (or AGENTS.md) file to give coding agents context about a codebase.

Self-hosting my photos with Immich(michael.stapelberg.ch)

609 points by birdculture 11 months ago | 341 comments

Michael Stapelberg's blog post describing how he set up Immich as a self-hosted replacement for Google Photos, covering hardware, installation, iPhone app, and backups.

I designed and printed a custom nose guard to help my dog with DLE(snoutcover.com)

576 points by ragswag 11 months ago | 68 comments

The SnoutCover maker's story of designing and 3D-printing a custom nose guard for their dog Billie, who has discoid lupus erythematosus (DLE).

Windows drive letters are not limited to A-Z(ryanliptak.com)

476 points by LorenDB 11 months ago | 240 comments

Blog post explaining that Windows drive letters can be non A-Z characters, demonstrated by using subst to create a +:\ drive, and exploring the implications.

Zigbook Is Plagiarizing the Zigtools Playground(zigtools.org)

447 points by todsacerdoti 11 months ago | 131 comments

A Zigtools blog post alleging that the Zigbook learning resource plagiarized code from the Zigtools Playground.

A Love Letter to FreeBSD(tara.sh)

401 points by rbanffy 10 months ago | 266 comments

A personal blog post written as a love letter to FreeBSD, praising its coherent base system, boot environments, and long-term stability.

Migrating Dillo from GitHub(dillo-browser.org)

400 points by todsacerdoti 11 months ago | 199 comments

A news post by Dillo maintainer Rodrigo Arias Mallo explaining why the Dillo browser project is moving from GitHub to a self-hosted server with mirrors on other forges.

Z-Image: Powerful and highly efficient image generation model with 6B parameters(github.com)

368 points by doener 11 months ago | 145 comments

GitHub repository for Z-Image, a 6B-parameter image generation model from Alibaba's Tongyi-MAI team, released under Apache-2.0.

Don't push AI down our throats(gpt3experiments.substack.com)

337 points by nutanc 10 months ago | 245 comments

A Substack essay arguing that AI is being forced into search bars, operating systems, and creative tools, and should instead be adopted slowly and organically.

Algorithms for Optimization [pdf](algorithmsbook.com)

336 points by Anon84 10 months ago | 29 comments

PDF of the second edition of the textbook "Algorithms for Optimization" by Kochenderfer and Wheeler.

Beej's Guide to Learning Computer Science(beej.us)

332 points by amruthreddi 11 months ago | 126 comments

Landing page for Beej's Guide to Learning Computer Science, a free work-in-progress beta guide offered in several HTML formats.

GitHub to Codeberg: my experience(eldred.fr)

319 points by todsacerdoti 11 months ago | 124 comments

A blog post describing the author's process and experience of migrating their projects and website from GitHub to Codeberg.

CachyOS: Fast and Customizable Linux Distribution(cachyos.org)

274 points by doener 11 months ago | 244 comments

Norway wealth fund to vote for human rights report at Microsoft, against Nadella(cnbc.com)

268 points by saubeidl 11 months ago | 137 comments

“Boobs check” – Technique to verify if sites behind CDN are hosted in Iran(twitter.com)

267 points by defly 10 months ago | 86 comments

Meshtastic(meshtastic.org)

264 points by debo_ 11 months ago | 68 comments

Qwen3-VL can scan two-hour videos and pinpoint nearly every detail(the-decoder.com)

245 points by thm 11 months ago | 75 comments

CSS now has an if() conditional function(caniuse.com)

244 points by aanthonymax 11 months ago | 201 comments

Modern cars are spying on you. Here's what you can do about it(apnews.com)

229 points by MilnerRoute 11 months ago | 236 comments

AI just proved Erdos Problem #124(erdosproblems.com)

211 points by nl 11 months ago | 72 comments

The Thinking Game Film – Google DeepMind documentary(thinkinggamefilm.com)

184 points by ChrisArchitect 11 months ago | 118 comments

ETH-Zurich: Digital Design and Computer Architecture; 227-0003-10L, Spring, 2025(safari.ethz.ch)

173 points by __rito__ 11 months ago | 18 comments

NixOS 25.11 released(nixos.org)

163 points by trulyrandom 10 months ago | 46 comments

YouTube increases FreeBASIC performance (2019)(freebasic.net)

154 points by giancarlostoro 11 months ago | 40 comments

Making tiny 0.1cc two stroke engine from scratch(youtu.be)

140 points by pillars 11 months ago | 33 comments

LLVM-MOS – Clang LLVM fork targeting the 6502(llvm-mos.org)

132 points by jdmoreira 11 months ago | 59 comments

People keep flocking to Linux, not just to escape Windows(zdnet.com)

131 points by breve 10 months ago | 102 comments

Bricklink suspends Marketplace operations in 35 countries(jaysbrickblog.com)

130 points by makeitdouble 10 months ago | 58 comments

Program-of-Thought Prompting Outperforms Chain-of-Thought by 15% (2022)(arxiv.org)

123 points by mkagenius 10 months ago | 33 comments

Langjam Gamejam: Build a programming language then make a game with it(langjamgamejam.com)

119 points by birdculture 11 months ago | 54 comments

ESA Sentinel-1D delivers first high-resolution images(esa.int)

115 points by giuliomagnifico 11 months ago | 32 comments

How to run phones while being struck by suicide drones(nasa.cx)

113 points by nasaok 10 months ago | 31 comments

Stopping bad guys from using my open source project (feedback wanted)(evanhahn.com)

99 points by emschwartz 11 months ago | 149 comments

A new Little Prince museum has opened its doors in Switzerland(lepetitprince.com)

97 points by gnabgib 11 months ago | 55 comments

Don't throw away your old PC–it makes a better NAS than anything you can buy(howtogeek.com)

97 points by makerdiety 11 months ago | 81 comments

Show HN: ReadyKit – Superfast SaaS Starter with Multi-Tenant Workspaces(readykit.dev)

96 points by level09 11 months ago | 33 comments

Tell HN: Regrets. Think carefully about how you spend your time

96 points by anonymous_ibex 11 months ago | 20 comments

Show HN: MTXT – Music Text Format(github.com)

92 points by daninet 11 months ago | 32 comments

Show HN: Tacopy – Tail Call Optimization for Python(github.com)

82 points by raaid-rt 11 months ago | 40 comments

There is No Quintic Formula [video](youtube.com)

79 points by DamnInteresting 11 months ago | 32 comments

You want microservices, but do you need them?(docker.com)

77 points by tsenturk 10 months ago | 91 comments

Ethiopian volcano erupts for first time in nearly 12k years of records(smithsonianmag.com)

75 points by pseudolus 11 months ago | 19 comments

The Undermining of the CDC(newyorker.com)

70 points by bookofjoe 11 months ago | 68 comments

The space of minds(karpathy.bearblog.dev)

69 points by Garbage 11 months ago | 30 comments

Silicon Valley's man in the White House is benefiting himself and his friends(nytimes.com)

68 points by fleahunter 11 months ago | 42 comments

Ty – A fast Python type checker, written in Rust(docs.astral.sh)

67 points by dvrp 10 months ago | 8 comments

Apple Desktop Bus Protocol (2021)(lopaciuk.eu)

59 points by dcminter 11 months ago | 10 comments

Mapping Amazing: Bee Maps(maphappenings.com)

53 points by altilunium 11 months ago | 29 comments

Aurora: The Linux-based ultimate workstation(getaurora.dev)

47 points by doener 11 months ago | 38 comments

Notes on Shadowing a Hospitalist(humaninvariant.substack.com)

45 points by surprisetalk 11 months ago | 22 comments

What I don’t like about chains of thoughts (2023)(samsja.github.io)

40 points by jxmorris12 11 months ago | 17 comments

The Copenhagen Trap: How the West made passivity the only safe strategy(aliveness.kunnas.com)

37 points by ekns 11 months ago | 21 comments

Ephemeral Infrastructure: Why Short-Lived Is a Good Thing(lukasniessen.medium.com)

35 points by birdculture 11 months ago | 15 comments

Interop and MathML Core(conflor.es)

35 points by todsacerdoti 11 months ago | 3 comments

What's the deal with Euler's identity?(lcamtuf.substack.com)

34 points by surprisetalk 11 months ago | 33 comments

Atlas Shrugged (2024)(david-jasso.com)

32 points by mnky9800n 11 months ago | 37 comments

Hacking on the ReMarkable 2(sgt.hootr.club)

31 points by todsacerdoti 10 months ago | 5 comments

New 3D scan reveals a hidden network of moai carvers on Easter Island(sciencedaily.com)

28 points by saikatsg 10 months ago | 4 comments