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Ultramarine 1 Flash

https://www.paperinstruments.com/ultramarine
188•i_rush_carriers•1d ago•59 comments

Tesla Roadster

https://www.tesla.com/roadster
1361•shekhar101•1d ago•2413 comments

Show HN: Llmspeed – feel how fast a local LLM runs before you buy the hardware

https://llmspeed.dev/
27•albinstman•2h ago•7 comments

Llama.cpp on a jailbroken PS5: run any GGUF model natively on the console

https://github.com/cobanov/PS5LM
271•Anon84•12h ago•64 comments

Claude reveals ECDSA curve origins

https://www.anthropic.com/research/ecdsa-curve-origins
827•ahlCVA•12h ago•311 comments

California is building a $400M shield for Yosemite's most dangerous highway

https://www.sfchronicle.com/california/article/yosemite-national-park-highway-140-22463847.php
35•danso•2d ago•20 comments

You could have invented transformers from memory

https://alexwang.ai/posts/associative-memory/
252•speckx•12h ago•64 comments

FLUX 3 Image Klein

https://bfl.ai/blog/flux-3-image-klein
152•gmays•11h ago•41 comments

eBay Restricts Listings of Radio Equipment, but Exempts Ham-Band-Only Gear

https://www.arrl.org/arrlletterissue?issue=2026-10-15#eBay-Restricts-Listings-of-Radio-Equipment_...
211•7402•13h ago•168 comments

Apple ML Research: Muse Spark Open with MLX on Mac Studio

https://machinelearning.apple.com/research/mlx-distributed-inference
302•antipaul•17h ago•157 comments

0/1 Knapsack Problem in PyTorch

https://jedrzej.maczan.pl/2025_11_21_dp_knapsack_sliding_hirschberg
8•yu3zhou4•2d ago•0 comments

Butlerian Jihad

https://dune.fandom.com/wiki/Butlerian_Jihad
187•wetwater•5h ago•103 comments

JPEG XL vs. AVIF for web use-cases

https://jakearchibald.com/2026/jpeg-xl-vs-avif/
241•farlight•15h ago•168 comments

Designing more efficient quantum circuits with Claude

https://www.anthropic.com/research/designing-efficient-quantum-circuits
130•pretext•13h ago•29 comments

I built the RealWorld app in Lean 4

https://leangineer.com/blog/realworld-in-lean/
41•saviorand•2d ago•3 comments

Intuitive concurrent programming in any language

https://www.lf-lang.org/
10•mpweiher•1d ago•0 comments

A story of WiFi secrets, UART lockdowns and a damaged flash memory chip

https://adepts.of0x.cc/eufy-homestation2-firmware/
36•michidk•15h ago•2 comments

Flexport Is Hiring a Biz Ops Leader in Office of CEO

https://www.flexport.com/company/careers/
1•thedogeye•6h ago

Monte-Carlo Simulations

https://eli.thegreenplace.net/2026/monte-carlo-simulations/
103•ibobev•3d ago•20 comments

90% of US working hours are spent on tasks not covered well by AI benchmarks

https://www.mercor.com/research/labor-index/benchmark-map/
474•speckx•14h ago•405 comments

Wireless magnetic millirobots that deliver medicine inside the beating heart

https://hub.jhu.edu/2026/10/12/magnetic-millirobots-cardiac-treatment/
91•giuliomagnifico•3d ago•12 comments

How the Claude Code team does code review

https://claude.dev/blog/solving-code-review-at-anthropic/
318•pretext•12h ago•297 comments

Show HN: Gemini 4 Argon plays StarCraft

https://starskirmish.com/bench/v0-2/
212•__cayenne__•17h ago•94 comments

I love software rendering

https://www.jamesfmackenzie.com/2026/10/13/i-love-software-rendering/
318•speckx•18h ago•199 comments

Nine-Inch Snails

https://www.theatlantic.com/science/2026/10/giant-african-snails-florida-invasion/688850/
54•zdw•9h ago•29 comments

New 'super ice' 10 times stronger, bringing it close to the strength of concrete

https://www.sciencealert.com/a-new-super-ice-is-10-times-stronger-bringing-it-close-to-the-streng...
95•andrewl•3d ago•71 comments

C++26: The New Debugging Header

https://www.sandordargo.com/blog/2026/09/30/cpp26-debugging
88•jandeboevrie•12h ago•20 comments

Big Fish: Exploiting a 37-Year-Old Kernel Bug in OpenBSD

https://calif.io/research/big-fish
183•rs_rs_rs_rs_rs•16h ago•55 comments

"In every study that considered the question"

https://unsung.aresluna.org/in-every-study-that-considered-the-question/
24•zdw•3h ago•15 comments

Stolen Renoir paintings found hidden, and damaged, behind cinder block wall

https://www.cbsnews.com/news/stolen-renoir-paintings-found-behind-wall-france/
121•ohjeez•3d ago•77 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•1y ago

Comments

stevoski•1y 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•1y 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•1y 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_•1y ago
Spotbugs or checkstyle etc... would catch these. What does AI add here?
xyst•1y 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•1y 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•1y 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•1y 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•1y 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•1y ago
stupid af
Traubenfuchs•1y 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•1y 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•1y ago
Can the QA team? How does the dev/staging environment help writing less buggy code?
rad_gruchalski•1y ago
But can you leetcode heh.
TYMorningCoffee•1y 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.