frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Open in hackernews

Ask HN: What did you build this winter?

3•swalsh•2d 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•2d 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•2d ago
That's interesting, what was the original problem that inspired you to build it?
shudv•2d 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•2d 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.

A new type of microscope lets scientists observe life unfolding inside cells

https://www.thebrighterside.news/post/a-new-type-of-microscope-lets-scientists-observe-life-unfol...
1•thunderbong•28s ago•0 comments

PostgreSQL 18 Returning Enhancements: A Game Changer for Modern Applications

https://www.pgedge.com/blog/postgresql-18-returning-enhancements-a-game-changer-for-modern-applic...
1•todsacerdoti•43s ago•0 comments

Netflix Ruined Korean Dramas Forever [video]

https://www.youtube.com/watch?v=p1_j6izmEX4
1•mgh2•1m ago•0 comments

Show HN: Claude Code Skill for Deep Code Reviews

https://github.com/turingmindai/turingmind-code-review
1•vinkupa•2m ago•0 comments

Show HN: Visualizing LLM Model Collapse at Gen 20

https://github.com/mhh1430hacker/Ainex-Limit-Experiment
1•Mhh1430•3m ago•0 comments

Ask HN: Help me crowd source this directory of text-only news sites

1•keepamovin•3m ago•0 comments

Climbing the mountain: or, venturing into PL theory

https://techne98.com/blog/climbing-the-mountain/
2•fixedprog•8m ago•0 comments

Empire Strikes Back (At Privacy): Archaeology of Tracking on Government Websites

https://www.flux.utah.edu/paper/singh-pets26
1•pabs3•9m ago•0 comments

Nineteen Septillion Addresses – Setting Up an ASN and Getting an IPv6 Allocation

https://alastairbarber.com/Setting-Up-ASN-IPv6-Routing-BIRD-Teltonika-Router-Wireguard/
1•alibarber•15m ago•0 comments

The Q, K, V Matrices

https://arpitbhayani.me/blogs/qkv-matrices/
4•yashsngh•18m ago•0 comments

My Logitech mouse became unusable, Logi Options+ can't validate certificate

1•enescakir•18m ago•1 comments

Quaject

https://en.wikipedia.org/wiki/Quaject
2•gjvc•21m ago•0 comments

Modern C++ Programming (open-access course)

https://federico-busato.github.io/Modern-CPP-Programming/
1•pjmlp•23m ago•0 comments

OnceMap: Rust Pattern for Running Concurrent Work Exactly Once (uv codebase)

https://codepointer.substack.com/p/uv-oncemap-rust-pattern-for-running
1•hkmaxpro•23m ago•0 comments

Why one small American town won't stop stoning its residents to death

https://archiveofourown.org/works/73396436?view_adult=true
1•barry-cotter•23m ago•0 comments

Photonic Raises $130M to Accelerate Quantum Computing and Networking

https://photonic.com/news/photonic-raises-180m/
1•jc_811•25m ago•0 comments

Necrosecurity, Immunosupremacy, and Survivorship in the Imagination of Covid-19

https://www.degruyterbrill.com/document/doi/10.1515/opan-2020-0104/html
1•colinprince•25m ago•0 comments

A Glimpse into DexProtector

https://www.romainthomas.fr/post/26-01-dexprotector/
1•shelfchair•27m ago•0 comments

This Month in Redox – December 2025

https://www.redox-os.org/news/this-month-251231/
3•Ganipote•37m ago•0 comments

Show HN: Qpost.dev – An open API to post to TikTok, YT, and IG in one place

https://qpost.dev
1•arslan2012•37m ago•0 comments

Enclose.horse Solver

https://dyigitpolat.github.io/enclose-horse-solver/
1•dyigitpolat•39m ago•1 comments

Reverse Engineering Zed's AI Coding Assistant with Mitmproxy

https://dzlab.github.io/genai/2025/06/07/mitmproxy-zed/
2•leobg•41m ago•0 comments

The Stock Market Is Doing Something It's Only Done Twice Since 1871

https://www.aol.com/articles/stock-market-doing-something-only-133500640.html
2•zerosizedweasle•41m ago•1 comments

Coding Essentials for Astronomers

https://tingyuansen.github.io/coding_essential_for_astronomers/
2•pppone•42m ago•0 comments

How do you convert PCAP/PCAPNG to JSON/NDJSON for pipelines?

https://omnvert.com/en/tools/pcap-to-json
1•kaant•44m ago•0 comments

Reconstructability and Auditability of AI Outputs in Regulated Environments

https://zenodo.org/records/18169843
1•businessmate•46m ago•1 comments

Greenland Will Be American

https://isitpropaganda.substack.com/p/greenland-will-be-american
3•throw310822•47m ago•0 comments

Show HN: MotionPoster – static poster to animated poster

https://motionposter.org/
1•kuzej•47m ago•0 comments

Dell announces 52-inch 6K display with Thunderbolt

https://9to5mac.com/2026/01/06/dell-announces-massive-52-inch-6k-display-with-thunderbolt/
1•01-_-•48m ago•0 comments

A Calif. Teen Trusted ChatGPT for Drug Advice. He Died from an Overdose

https://longreads.com/2026/01/06/a-calif-teen-trusted-chatgpt-for-drug-advice-he-died-from-an-ove...
2•microsoftedging•48m ago•1 comments