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I Stored a Website in a Favicon

https://www.timwehrle.de/blog/i-stored-a-website-in-a-favicon/
119•theanonymousone•3h ago•38 comments

Data Compression Explained (2012)

https://mattmahoney.net/dc/dce.html
118•mtdewcmu•3d ago•15 comments

Where to Find the Colors Your Screen Can't Show You

https://moultano.wordpress.com/2026/06/19/where-to-find-the-colors-your-screen-cant-show-you/
98•moultano•5h ago•26 comments

There are no instances in ATProto

https://overreacted.io/there-are-no-instances-in-atproto/
439•danabramov•18h ago•226 comments

Can you see three trees?

https://www.not-ship.com/can-you-see-three-trees/
110•Pamar•2d ago•50 comments

The discovery that changed how scientists think about memory

https://www.ibm.com/think/news/discovery-changed-how-scientists-think-about-memory-kavli-prize
52•rbanffy•2d ago•11 comments

Surprising economics of load-balanced systems

https://brooker.co.za/blog/2020/08/06/erlang.html
108•KraftyOne•13h ago•27 comments

Hyundai buys Boston Dynamics

https://startupfortune.com/hyundai-takes-full-control-of-boston-dynamics-as-softbank-exits-for-32...
825•ck2•17h ago•362 comments

How many of the 170k English words do you know?

https://vocabowl-870366514258.us-west1.run.app/
365•abnry•19h ago•448 comments

GPT-5.5 hallucinates 3x more than MIT-licensed GLM-5.2

https://arrowtsx.dev/bigger-models/
142•oshrimpton•17h ago•38 comments

Norway imposes near ban on AI in elementary school

https://www.reuters.com/technology/norway-imposes-near-ban-ai-elementary-school-2026-06-19/
660•ilreb•17h ago•455 comments

Soccer Arcade Games Through the Years

https://arcadeheroes.com/2026/06/13/world-cup-2026-soccer-arcade/
17•speckx•3d ago•2 comments

Project Valhalla, Explained: How a Decade of Work Arrives in JDK 28

https://www.jvm-weekly.com/p/project-valhalla-explained-how-a
593•philonoist•1d ago•368 comments

Bobby Prince, composer for Doom, Wolfenstein 3D, and Duke Nukem 3D, has died

https://www.legacy.com/legacy/robert-bobby-prince-lll
370•pgrote•13h ago•40 comments

Satellite reveals immense scale of GPS signal tampering

https://www.space.com/space-exploration/satellites/its-quite-a-bit-more-than-we-expected-satellit...
75•y1n0•5h ago•24 comments

A 1969 camera operators' strike created Upstairs Downstairs multiverse

https://ironicsans.ghost.io/the-color-strike/
20•ohjeez•3d ago•4 comments

A Perceptron in Age of Empires II

https://adewynter.github.io/notes/aoe2-circuits
72•EvgeniyZh•2d ago•31 comments

Egyptian Fractions (2006)

https://blog.plover.com/math/egyptian-fractions.html
94•luu•4d ago•8 comments

AURpocalypse now: a look at the recent AUR attacks

https://lwn.net/SubscriberLink/1077619/f7b07c5489fdd43a/
81•jwilk•16h ago•52 comments

John Jumper to join Anthropic

https://twitter.com/JohnJumperSci/status/2068001285173834106
130•artninja1988•15h ago•95 comments

Ask HN: Will programmers write more efficient code during the memory shortage?

109•amichail•10h ago•179 comments

Digital Printing of Arabic: explaining the problem

https://digitalorientalist.com/2017/08/21/digital-printing-of-arabic-explaining-the-problem/
56•a_t48•3d ago•23 comments

Zen and the Art of Machine Learning Research

https://blog.jxmo.io/p/zen-and-the-art-of-machine-learning
257•jxmorris12•4d ago•92 comments

Court Records Should Be Free

https://www.eff.org/deeplinks/2026/06/court-records-should-be-free
363•hn_acker•15h ago•80 comments

Building a robotics research setup that lives next to my desk

https://dfdxlabs.com/research/2026/robotics-setup/
148•mplappert•1d ago•51 comments

Telescope Ranchers

https://kottke.org/26/06/telescope-ranchers
124•bookofjoe•3d ago•47 comments

Show HN: Metiq: a real time 3D globe for 100 public datasets

https://metiq.space
122•rakeda•3d ago•32 comments

Big Banana Car

https://bigbananacar.com/
150•Bender•15h ago•76 comments

Designing a backyard deck for my house

https://blog.cosmin.cloud/posts/diy-deck.html
14•spycraft•4h ago•4 comments

Ten years of ClickHouse in open source

https://clickhouse.com/blog/open-source-10
301•saisrirampur•4d ago•84 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.