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Open Source @Github

fp.

“I just chose words carefully”

https://unsung.aresluna.org/i-just-chose-words-carefully/
675•zdw•9h ago•163 comments

P99 0 ms* autocomplete for 240M domain names

https://ruurtjan.com/articles/p99-0ms-autocomplete-for-240-million-domain-names
80•dbalatero•4h ago•34 comments

Creepy Crawlies

https://people.kernel.org/monsieuricon/creepy-crawlies
1095•zdw•1d ago•537 comments

Transfer files over an Ethernet patch cable

https://maurycyz.com/misc/etherfiles/
62•jllyhill•4h ago•41 comments

My hobby of building miniatures and taking pretty pictures

https://sandyuraz.com/blogs/tiny-cafe/
85•thecsw•2d ago•13 comments

Highlighting My Code Based on How Much I Care

https://hank.bond/posts/highlighting-my-code-based-on-how-much-i-care/
23•hankbond•2d ago•4 comments

Matrox: Graphics for Professionals

https://www.abortretry.fail/p/matrox
90•BirAdam•8h ago•27 comments

It takes 5 cloud services to hear my doorbell

https://blog.vghaisas.com/rube-goldberg-doorbell/
130•vghaisas•2d ago•111 comments

A 12TB Steam "teraleak" spills more than a decade of lost PC gaming history

https://arstechnica.com/gaming/2026/08/a-12tb-steam-teraleak-spills-more-than-a-decade-of-lost-pc...
45•WithinReason•1h ago•5 comments

Understanding ChatGPT Work

https://simonwillison.net/2026/Aug/30/understanding-chatgpt-work/
153•gmays•6h ago•50 comments

Haiku R1/beta6 has been released

https://www.haiku-os.org/news/2026-08-26_haiku_r1_beta6
306•metrofun•15h ago•88 comments

How to build a diffusion language model

https://kuleshov-group.github.io/blog/blog/2026/how-to-build-a-diffusion-language-model/
65•volodia•8h ago•5 comments

Show HN: NFC Energy-Harvesting PCB Business Card with an MCU

https://wilsonharper.net/projects/businesscard/
159•WilsonHarper•2d ago•16 comments

OpenClaw 2.0, Accidentally

https://openclaw.ai/blog/openclaw-2-accidentally
71•doppp•4h ago•73 comments

Cores in space: The core memory module from a 1980 Spacelab computer

https://www.righto.com/2026/08/spacelab-core-memory.html
101•pwg•11h ago•17 comments

Hacking IKEA Furniture

https://greenlightning.eu/diy/hacking-ikea-furniture/
305•greenlightning•20h ago•213 comments

Sort branches by last commit date

https://ryangreenberg.com/til/git-branches-by-commit-date/
113•speckx•5d ago•43 comments

Why open source rocks – a new SM750 (Silicon Motion GPU) HDMI Driver

https://github.com/KodeMunkie/sm750hdmifb
102•SillyUsername•13h ago•36 comments

Continuous Diffusion Language Models (CDLM's)

https://sander.ai/2026/08/24/continuous-dlms.html
90•peter_d_sherman•11h ago•34 comments

Relm4 makes developing beautiful cross-platform applications idiomatic

https://relm4.org/
33•Bluestein•4d ago•17 comments

What 2000 Buried Underpants Revealed About Where Soil Is Most Alive

https://studyfinds.com/what-2000-buried-underpants-revealed-about-where-soil-is-most-alive/
4•mdp2021•3d ago•1 comments

Internet centralization and the original sin of NAT

https://dreamstation.systems/personal/ntppost.html
47•robinpie•5h ago•27 comments

Coordination Headwind: How Organizations Are Like Slime Molds

https://komoroske.com/slime-mold/
153•rzk•15h ago•45 comments

How would you know whether an ancient culture had zero?

https://www.johndcook.com/blog/2026/08/21/ancient-number-system/
52•ibobev•3d ago•25 comments

Racter (1984)

https://www.ubu.com/historical/racter/index.html
25•buescher•2d ago•6 comments

Dad’s Custom Atari Peripherals

https://www.goto10retro.com/p/dads-custom-atari-peripherals
128•rbanffy•3d ago•16 comments

Arbitrary code execution in QubesOS via copy-to-VM error reporting backchannel

https://www.qubes-os.org/news/2026/08/29/qsb-118/
226•vntok•23h ago•90 comments

Zig: Pointer Stability for ArrayLists

https://ziglang.org/devlog/2026/#2026-08-27
105•tosh•17h ago•66 comments

Longest Straight Line Paths on Water or Land on the Earth (2018)

https://arxiv.org/abs/1804.07389
203•joebig•23h ago•58 comments

Meta Security Researcher's AI Agent Accidentally Deleted Her Emails

https://au.pcmag.com/ai/116091/meta-security-researchers-ai-agent-accidentally-deleted-her-emails
8•Bluestein•36m ago•2 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.