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Open Source @Github

fp.

"They had no concept of a duty of care to their users."

https://unsung.aresluna.org/they-had-no-concept-of-a-duty-of-care-to-their-users/
232•jandeboevrie•2h ago•176 comments

The Normalization of Inexplicable Failures

https://www.ihatethefuture.com/2026/09/the-normalization-of-inexplicable.html
46•pxx•1h ago•10 comments

In an $80 Motel Room, a Discovery to Shed Light on the Origins of Life

https://www.nytimes.com/2026/09/26/science/motel-science-discovery.html
61•danso•2h ago•25 comments

Replacing the old battery on rechargeable bike lights

https://jvns.ca/blog/2026/09/27/replacing-the-old-battery-on-rechargeable-bike-lights/
62•surprisetalk•3h ago•25 comments

Writing Efficient C++ Code

https://asawicki.info/articles/writing_efficient_cpp_code.php
41•ibobev•1d ago•11 comments

Ten Lines of Code That Changed My World

https://pixelambacht.nl/2026/ten-lines-of-code/
35•dimonomid•3h ago•4 comments

Show HN: TinyAIArena watch AI agents battle it out

https://tinyaiarena.com/
17•hp6•54m ago•6 comments

Flip Fluid on Flip Dots

https://mitxela.com/projects/flipflip
277•blutack•1d ago•18 comments

Show HN: A CC0 museum of retro 3D tricks you can paste into a page

https://3d-retro.com/
36•SouthWestAtlas•3d ago•8 comments

Fakecloud: Local AWS cloud emulator for integration tests

https://fakecloud.dev/
45•theanonymousone•1d ago•26 comments

Does Georgism work? Five years later

https://www.astralcodexten.com/p/does-georgism-work-five-years-later
461•silveraxe93•2d ago•373 comments

Go Concurrency Distilled

https://antonz.org/go-concurrency-distilled/
317•chmaynard•1d ago•134 comments

postmarketOS Rebrand: Nura

https://nura.eco/blog/2026/09/27/nura-rename/
40•HotGarbage•1h ago•0 comments

Font where each token is equal-width

https://twitter.com/amplifiedamp/status/2103535129503383700
25•ampdot•23h ago•11 comments

Finally, A True Blue Rose Exists

https://www.sciencenews.org/article/true-blue-rose-pigment-copigment
71•bookofjoe•1d ago•27 comments

Walgit: A Git server that is one binary in front of an object store

https://github.com/rgodha24/walgithub
6•handfuloflight•1d ago•2 comments

Unsealed Briefs in Authors’ Case v. Microsoft/OpenAI

https://authorsguild.org/news/ag-v-openai-top-execs-knew-mass-book-piracy-was-illegal/
545•papergirl•10h ago•496 comments

PipePipe: NewPipe hard fork implementing SponsorBlock

https://github.com/InfinityLoop1308/PipePipe
468•Qision•2d ago•250 comments

Rusty thoughts on "Parse, don't validate"

https://eli.thegreenplace.net/2026/rusty-thoughts-on-parse-dont-validate/
38•ingve•7h ago•13 comments

Show HN: Reladraw – A diagram language where you decide where to place things

https://github.com/reladraw/reladraw
364•jpwalsh234•23h ago•101 comments

DeepSeek Elastic Compute (DSec)

https://arxiv.org/abs/2609.22978
303•shenli3514•22h ago•95 comments

The internet discovers TLA+. Now what?

https://reasonable.io/blog/tla-tutorial/
84•matt_d•11h ago•43 comments

ASML says it sold 'absolutely nothing' in Europe in 2026

https://www.tomshardware.com/tech-industry/semiconductors/asml-says-its-sells-absolutely-nothing-...
372•MC995•2d ago•805 comments

Biology might not be quantum, but its math is quantumlike

https://www.quantamagazine.org/biology-might-not-be-quantum-but-its-math-is-quantumlike-20260923/
105•pseudolus•2d ago•45 comments

"As a Language Model": Chat Template Switches LLM Self-Referential Voice

https://arxiv.org/abs/2609.25021
84•yu3zhou4•6h ago•93 comments

A searchable library of forgotten public-domain film clips from 1915 onward

https://www.movingimagearchive.com/
197•momentmaker•3d ago•26 comments

10 Tells of a Slop UI

https://hereticpleb.vercel.app/blog/10-tells-of-slop
200•theanonymousone•2h ago•149 comments

Fifteen years later, the Apple Cards origin story

https://lexontech.org/fifteen-years-later-the-apple-cards-origin-story
424•ksec•1d ago•110 comments

An agent used DNS to reach an external chatbot

https://alignment.openai.com/misalignment-reports/an-agent-used-dns-to-reach-an-external-chatbot/
142•apsec112•1d ago•146 comments

Exploding variance of means of exponentials: least-squares to the rescue

https://francisbach.com/spectral_log_density_estimation/
58•matt_d•1d ago•0 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.