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"Erdos problem #728 was solved more or less autonomously by AI"

https://mathstodon.xyz/@tao/115855840223258103
181•cod1r•2h ago•119 comments

JavaScript Demos in 140 Characters

https://beta.dwitter.net
167•themanmaran•6h ago•35 comments

RTX 5090 and Raspberry Pi: Can it game?

https://scottjg.com/posts/2026-01-08-crappy-computer-showdown/
128•scottjg•5h ago•60 comments

Flock Hardcoded the Password for America's Surveillance Infrastructure 53 Times

https://nexanet.ai/blog/53-times-flocksafety-hardcoded-the-password-for-americas-surveillance-inf...
176•fuck_flock•8h ago•57 comments

Show HN: Rocket Launch and Orbit Simulator

https://www.donutthejedi.com/
85•donutthejedi•5h ago•26 comments

Caltrain shows why every region should be moving toward regional rail

https://www.hsrail.org/blog/caltrain-shows-why-every-region-should-be-moving-toward-regional-rail/
28•gok•47m ago•23 comments

Scientists discover oldest poison, on 60k-year-old arrows

https://www.nytimes.com/2026/01/07/science/poison-arrows-south-africa.html
86•noleary•1d ago•26 comments

How will the miracle happen today?

https://kk.org/thetechnium/how-will-the-miracle-happen-today/
334•zdw•5d ago•182 comments

The (likely?) cheapest home-made Michelson interferometer

https://guille.site/posts/3d-printed-michelson/
77•LolWolf•5d ago•37 comments

See it with your lying ears

https://lcamtuf.substack.com/p/see-it-with-your-lying-ears
14•fratellobigio•50m ago•0 comments

QtNat – Open you port with Qt UPnP

http://renaudguezennec.eu/index.php/2026/01/09/qtnat-open-you-port-with-qt/
37•jandeboevrie•4h ago•23 comments

Show HN: Scroll Wikipedia like TikTok

https://quack.sdan.io
131•sdan•6h ago•33 comments

Ragdoll Mayhem Maker – a physics-based level editor for my indie game

https://ragdollmayhemmaker.com/
16•anefiox•2d ago•5 comments

Show HN: I made a memory game to teach you to play piano by ear

https://lend-me-your-ears.specr.net
392•vunderba•7h ago•140 comments

My article on why AI is great (or terrible) or how to use it

https://matthewrocklin.com/ai-zealotry/
61•akshayka•6h ago•105 comments

Design duality and the expression problem (2018)

https://www.tedinski.com/2018/02/27/the-expression-problem.html
6•NeutralForest•6d ago•0 comments

Deno has made its PyPI distribution official

https://github.com/denoland/deno/issues/31254
20•zahlman•3h ago•7 comments

Turn a single image into a navigable 3D Gaussian Splat with depth

https://lab.revelium.studio/ml-sharp
51•ytpete•6h ago•37 comments

How Markdown took over the world

https://www.anildash.com/2026/01/09/how-markdown-took-over-the-world/
123•zdw•7h ago•79 comments

Replit (YC W18) Is Hiring

https://jobs.ashbyhq.com/replit
1•amasad•7h ago

Amiga Pointer Archive

https://heckmeck.de/pointers/
38•erickhill•9h ago•16 comments

Kagi releases alpha version of Orion for Linux

https://help.kagi.com/orion/misc/linux-status.html
335•HelloUsername•12h ago•237 comments

Show HN: EuConform – Offline-first EU AI Act compliance tool (open source)

https://github.com/Hiepler/EuConform
56•hiepler•6h ago•33 comments

The Vietnam government has banned rooted phones from using any banking app

https://xdaforums.com/t/discussion-the-root-and-mod-hiding-fingerprint-spoofing-keybox-stealing-c...
408•Magnusmaster•8h ago•507 comments

Show HN: I built a tool to create AI agents that live in iMessage

https://tryflux.ai/
48•danielsdk•5d ago•23 comments

Show HN: Similarity = cosine(your_GitHub_stars, Karpathy) Client-side

https://puzer.github.io/github_recommender/
114•puzer•3d ago•32 comments

Show HN: Various shape regularization algorithms

https://github.com/nickponline/shreg
43•nickponline•23h ago•3 comments

Washington National Opera Is Leaving the Kennedy Center

https://www.nytimes.com/2026/01/09/arts/music/washington-national-opera-kennedy-center.html
43•mikhael•1h ago•7 comments

Exercise can be nearly as effective as therapy for depression

https://www.sciencedaily.com/releases/2026/01/260107225516.htm
288•mustaphah•6h ago•226 comments

Cloudflare CEO on the Italy fines

https://twitter.com/eastdakota/status/2009654937303896492
390•sidcool•8h ago•576 comments
Open in hackernews

Fixrleak: Fixing Java Resource Leaks with GenAI

https://www.uber.com/blog/fixrleak-fixing-java-resource-leaks-with-genai/
17•carimura•8mo ago

Comments

stevoski•7mo ago
> “Resource leaks, where resources like files, database connections, or streams aren’t properly released after use, are a persistent issue in Java applications”

This was true maybe back in 2005. Java has had try-with-resources for a loooong time. As I see it this has been the dominant idiom for ages, for handling resources that might leak.

okr•7mo ago
People tend to forget. Stream-API is a good candidate, that people like to not consider for leakage. If you don't own your stream, if you do not definitly know, that your stream comes from a collection, then ya better close it with a try-block.
bob778•7mo ago
How much effort was spent automating this to fix 112 instances across Uber’s code base? I assume code reviews would catch any new issues so this seems like overkill for a small one-off task?
hawk_•7mo ago
Spotbugs or checkstyle etc... would catch these. What does AI add here?
xyst•7mo ago
It gives marketing team at Uber to say "wE uSe AI hErE!!1". C-levels approve since anything AI gets a nice pump.

Engineering wise. This adds nothing. It’s an absolute waste of compute and energy to run this through LLMs

sigotirandolas•7mo ago
> This analysis ensures that FixrLeak skips functions where resources are passed as parameters, returned, or stored in fields, as these resources often outlive the function’s scope.

> FixrLeak delivers precise, reliable fixes while leaving more complex cases for advanced analysis at the caller level.

In other words, this will only fix trivial leaks, which are best seen as a language design issue and can be fixed by RAII, reference counting, etc.

It won't fix the more insidious leaks like `UNBOUNDED_QUEUE.add(item)` that are more likely to pass through code review in the first place.

xyst•7mo ago
Using AI when a static scanner like SonarQube easily picks up these types of resource leaks, especially in Java.

Peak waste.

What’s next?

"Get rid of your GitHub dependabot alerts and replace it with my shitty ChatGPT wrapper”

rvz•7mo ago
> Using AI when a static scanner like SonarQube easily picks up these types of resource leaks, especially in Java.

Exactly.

It's very disappointing to see that Uber engineers would rather trust an LLM to that claims to spot these issues when a battle-tested scanner such as SonarQube would have caught this in the first place.

The LLM hype-train is almost just as bad as the JavaScript hype train in the 2010s where some of the worst technologies are used on everything.

rvz•7mo ago
Why exactly do you need LLMs for this when efficient alternatives like SonarQube or checkstyle already do this without the expensive waste LLMs create?

This adds little to no technical advantage over existing solutions what so ever for this particular use case.

yahoozoo•7mo ago
stupid af
Traubenfuchs•7mo ago
So you tell me those 200-600k software engineers that can easily solve leetcode hard are so incompetent they missed using try-with-resources at such scale, they needed to introduce new AI tooling to fix it?

Hey Uber, I am from the EU, I usually can‘t even solve leetcode medium but I will write you scalable, spotless Java for a third of the salary.

Our industry and its economics are a joke.

hello_moto•7mo ago
So you write bug-free scalable code 100% in any jobs you ever worked for?

I guess we don’t need QA and Dev/Staging environment

rad_gruchalski•7mo ago
Can the QA team? How does the dev/staging environment help writing less buggy code?
rad_gruchalski•7mo ago
But can you leetcode heh.
TYMorningCoffee•7mo ago
A lot of commenters point out that there already are many established static checkers that do this. That is not what Uber attempts here.

Uber is not proposing a static checker. They even use sonar qube in their architecture. They propose using an LLM to resolve the leak detected by sonar qube.