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Open Source @Github

fp.

The Git history command deserves more attention

https://lalitm.com/post/git-history/
88•turbocon•2h ago•51 comments

Japan develops a method to recover up to 90% of lithium from used EV batteries

https://tech.supercarblondie.com/japan-recovers-up-to-90-of-lithium-from-used-ev-batteries/
14•donohoe•49m ago•0 comments

What will be left for us to work on?

https://www.normaltech.ai/p/what-will-be-left-for-us-to-work
28•randomwalker•1h ago•6 comments

Fundamentals of Wireless Communication

https://web.stanford.edu/~dntse/wireless_book.html
24•teleforce•1h ago•2 comments

Building and shipping Mac and iOS apps without opening Xcode

https://scottwillsey.com/building-and-shipping-mac-and-ios-apps-without-ever-opening-xcode/
341•speckx•8h ago•150 comments

The Economics of Recursive Self-Improvement [pdf]

https://elasticity.institute/rsi-paper.pdf
17•apsec112•1h ago•1 comments

Apple's new SpeechAnalyzer API, benchmarked against Whisper and its predecessor

https://get-inscribe.com/blog/apple-speech-api-benchmark.html
475•get-inscribe•11h ago•190 comments

An Englishwoman who sketched India before photography took hold

https://www.bbc.com/news/articles/cm2drrv6q54o
69•1659447091•4h ago•19 comments

Satellite Tracker – Live Map of Starlink and 30k Satellites

https://satellitemap.space/
14•rolph•1h ago•4 comments

MorphoHDL: A minimalistic language for growing circuits

https://paradigms-of-intelligence.github.io/morpho/
24•jacktang•1h ago•1 comments

Building Food Metadata with LLM Juries

https://careersatdoordash.com/blog/building-food-metadata-with-llm-juries-context-optimization-mu...
13•tie-in•1h ago•0 comments

Is x86 ready to ACE it?

https://chipsandcheese.com/p/is-x86-ready-to-ace-it
13•mfiguiere•1h ago•0 comments

World-First 'Super Alloy' Could Transform the Way Metals Are Made

https://www.sciencealert.com/world-first-super-alloy-could-transform-the-way-metals-are-made
22•tejohnso•4d ago•10 comments

The infinite scroll may become endangered if controversial Calif. law passes

https://www.sfgate.com/politics/article/meta-social-media-teenagers-22337724.php
102•Stratoscope•8h ago•165 comments

Turn your singing voice into printable notes (in the browser)

https://om-intelligence.ch/projects/vocal-notation/vocal-notation.html
25•busssard•3h ago•10 comments

Show HN: Sx 2.0 – Share AI skills with your team through a Dropbox folder

https://sleuth-io.github.io/sx/2026/07/10/your-dropbox-is-now-a-skill-server.html
20•detkin•3h ago•21 comments

The art and engineering of Sega CD Silpheed

https://fabiensanglard.net/silpheed/index.html
234•ibobev•12h ago•50 comments

Show HN: YouTube Guitar Tab Parser

https://github.com/marcelpanse/youtube-guitar-tab-parser
81•neogenix•7h ago•52 comments

SalesPatriot (YC W25) Is Hiring Full Stack Engineers (SF)

https://jobs.ashbyhq.com/SalesPatriot/df223727-5781-433e-bc75-2aa5bf8dc8d7
1•maciejSz•6h ago

Show HN: RandoFont – A browser for Google Fonts

https://randofont.alesh.com
26•aleshh•4d ago•3 comments

Linux on the Sega 32X. Who needs hardware synchronization primitives anyway?

https://cakehonolulu.github.io/linux-on-32x/
107•cakehonolulu•8h ago•22 comments

Show HN: Hackney – Compare Uber, Lyft, Waymo, and Robotaxi Prices

https://hackney.app/
31•griffinli•12h ago•21 comments

Show HN: Jacquard, a programming language for AI-written, human-reviewed code

https://github.com/jbwinters/jacquard-lang
57•jbwinters•11h ago•27 comments

Success may not matter if you aren't doing what you love

https://12gramsofcarbon.com/p/founders-guide-success-may-not-matter
47•theahura•2h ago•9 comments

Show HN: I implemented a neural network in SQL

https://github.com/xqlsystems/xarray-sql/blob/claude/xarray-sql-mnist-demo/benchmarks/nn.py
65•alxmrs•7h ago•13 comments

Ancient Roman Board Game

https://ludus-coriovalli.web.app/
97•nobody9999•4d ago•39 comments

TFTP Honey Pot Results

https://bruceediger.com/posts/tftp-honeypot-results/
62•speckx•8h ago•28 comments

Telegram's t.me domain has been suspended

https://www.whois.com/whois/t.me
272•Tiberium•7h ago•195 comments

A Study of Microsoft's Early 2026 Rollout of Claude Code and GitHub Copilot CLI

https://arxiv.org/abs/2607.01418
33•softwaredoug•5h ago•18 comments

A voxel Tokyo in real Japan time – ride the Yamanote line and study Japanese

https://jivx.com/densha
348•momentmaker•15h ago•70 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.