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Show HN: Medinilla – an OCPP compliant .NET back end (partially done)

https://github.com/eliodecolli/Medinilla
1•rhcm•2m ago•0 comments

How Does AI Distribute the Pie? Large Language Models and the Ultimatum Game

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=6157066
1•dkga•2m ago•1 comments

Resistance Infrastructure

https://www.profgalloway.com/resistance-infrastructure/
2•samizdis•6m ago•0 comments

Fire-juggling unicyclist caught performing on crossing

https://news.sky.com/story/fire-juggling-unicyclist-caught-performing-on-crossing-13504459
1•austinallegro•7m ago•0 comments

Restoring a lost 1981 Unix roguelike (protoHack) and preserving Hack 1.0.3

https://github.com/Critlist/protoHack
2•Critlist•9m ago•0 comments

GPS and Time Dilation – Special and General Relativity

https://philosophersview.com/gps-and-time-dilation/
1•mistyvales•12m ago•0 comments

Show HN: Witnessd – Prove human authorship via hardware-bound jitter seals

https://github.com/writerslogic/witnessd
1•davidcondrey•12m ago•1 comments

Show HN: I built a clawdbot that texts like your crush

https://14.israelfirew.co
2•IsruAlpha•14m ago•1 comments

Scientists reverse Alzheimer's in mice and restore memory (2025)

https://www.sciencedaily.com/releases/2025/12/251224032354.htm
1•walterbell•17m ago•0 comments

Compiling Prolog to Forth [pdf]

https://vfxforth.com/flag/jfar/vol4/no4/article4.pdf
1•todsacerdoti•18m ago•0 comments

Show HN: Cymatica – an experimental, meditative audiovisual app

https://apps.apple.com/us/app/cymatica-sounds-visualizer/id6748863721
1•_august•20m ago•0 comments

GitBlack: Tracing America's Foundation

https://gitblack.vercel.app/
2•martialg•20m ago•0 comments

Horizon-LM: A RAM-Centric Architecture for LLM Training

https://arxiv.org/abs/2602.04816
1•chrsw•20m ago•0 comments

We just ordered shawarma and fries from Cursor [video]

https://www.youtube.com/shorts/WALQOiugbWc
1•jeffreyjin•21m ago•1 comments

Correctio

https://rhetoric.byu.edu/Figures/C/correctio.htm
1•grantpitt•21m ago•0 comments

Trying to make an Automated Ecologist: A first pass through the Biotime dataset

https://chillphysicsenjoyer.substack.com/p/trying-to-make-an-automated-ecologist
1•crescit_eundo•25m ago•0 comments

Watch Ukraine's Minigun-Firing, Drone-Hunting Turboprop in Action

https://www.twz.com/air/watch-ukraines-minigun-firing-drone-hunting-turboprop-in-action
1•breve•26m ago•0 comments

Free Trial: AI Interviewer

https://ai-interviewer.nuvoice.ai/
1•sijain2•26m ago•0 comments

FDA intends to take action against non-FDA-approved GLP-1 drugs

https://www.fda.gov/news-events/press-announcements/fda-intends-take-action-against-non-fda-appro...
21•randycupertino•28m ago•10 comments

Supernote e-ink devices for writing like paper

https://supernote.eu/choose-your-product/
3•janandonly•30m ago•0 comments

We are QA Engineers now

https://serce.me/posts/2026-02-05-we-are-qa-engineers-now
1•SerCe•30m ago•0 comments

Show HN: Measuring how AI agent teams improve issue resolution on SWE-Verified

https://arxiv.org/abs/2602.01465
2•NBenkovich•30m ago•0 comments

Adversarial Reasoning: Multiagent World Models for Closing the Simulation Gap

https://www.latent.space/p/adversarial-reasoning
1•swyx•31m ago•0 comments

Show HN: Poddley.com – Follow people, not podcasts

https://poddley.com/guests/ana-kasparian/episodes
1•onesandofgrain•39m ago•0 comments

Layoffs Surge 118% in January – The Highest Since 2009

https://www.cnbc.com/2026/02/05/layoff-and-hiring-announcements-hit-their-worst-january-levels-si...
13•karakoram•39m ago•0 comments

Papyrus 114: Homer's Iliad

https://p114.homemade.systems/
1•mwenge•39m ago•1 comments

DicePit – Real-time multiplayer Knucklebones in the browser

https://dicepit.pages.dev/
1•r1z4•39m ago•1 comments

Turn-Based Structural Triggers: Prompt-Free Backdoors in Multi-Turn LLMs

https://arxiv.org/abs/2601.14340
2•PaulHoule•41m ago•0 comments

Show HN: AI Agent Tool That Keeps You in the Loop

https://github.com/dshearer/misatay
2•dshearer•42m ago•0 comments

Why Every R Package Wrapping External Tools Needs a Sitrep() Function

https://drmowinckels.io/blog/2026/sitrep-functions/
1•todsacerdoti•42m ago•0 comments
Open in hackernews

Ask HN: What did you build this winter?

3•swalsh•1mo ago
I often take a vacation around December (my company has a use it or lose it policy) and use it to hack on personal projects. With the double limits on Claude Code, and Codex, I got A LOT more done than normal. I'm curious what people built the past few weeks.

Comments

shudv•1mo ago
you are right - december is a good time to disconnect from the daily chaos and do some focussed work.

I worked on this: https://github.com/shudv/deltasort

Its a more efficient way to incrementally repair sorted arrays. Feedback welcome!

What did you build?

swalsh•1mo ago
That's interesting, what was the original problem that inspired you to build it?
shudv•1mo ago
If you have worked with React before - you would know that its actually not straightforward to correctly memoize computation. That is specially true for operations on collection data like filters and sorts.

That pushed me to first build this - https://github.com/shudv/memotable

which is a way to build a "read-optimised" in-memory collection so that re-renders in the ui layer do not run filters and sorts on the data again and again unnecessarily.

And this was sufficient to solve my original problem.

DeltaSort was just something that came to me while I was thinking about taking memotable performance to the next level - make the sorting as fast as possible. Thats when it hit me - if I am able to somehow use the information about the delta since the previous sort - that might help me re-sort much faster. And it turns out, it actually is much faster (at least for the Rust based implementation)

ben_w•1mo ago
I finished off a browser-based modern take on Asteroids, and the game engine to support it. The music synthesiser is definitely still buggy, if I go back to this I'll replace "synthesise this MIDI file" with "loop a pre-rasterised sound file", but TBH it's almost certainly more sensible for my next project to just use an existing engine, this was originally just an experiment to see what GenAI could even do.

Everything else besides the music is basically as I'd like it to be: gameplay progression, achievements, particle effects, game controller support, collision detection, etc. The art assets are also AI-generated.

I also updated my Raspberry Pi webcam interface. It's now 30fps, not 4, and has an acceptable UI. Also made progress with some automated motion detection in there, but I have yet to test that, I won't speak for it actually working until I do.

Couple of other projects too, but now's not the time to reveal them. One might even turn into from project into product.