frontpage.
newsnewestaskshowjobs

Open Source @Github

fp.

Old Bitly Links Are Being Hijacked

https://ransomnews.com/burger-king-tweet-bitly-link-hijack-2026/
27•hspeiser•42m ago•15 comments

A short explainer on how El Niño works [video]

https://www.youtube.com/watch?v=7_JF3etiAv8
130•nharada•4h ago•41 comments

Your Agent Will Pick the Hackable One

https://geoffstearns.com/blog/your-agent-will-pick-the-hackable-one/
49•tensafefrogs•1h ago•30 comments

Protomaps: Self-hosting map tiles has gotten cheap and easy

https://bruceroettgers.eu/blog/protomaps/
66•bcye•3h ago•15 comments

'Birdbrain' Is a Misnomer. Crows Make Decisions Faster Than We Can

https://www.nytimes.com/2026/11/15/science/birdbrain-crows-birds-research-decision.html
118•gumby•5h ago•87 comments

The MacBook Pro's OLED PWM problem

https://macanorak.com/the-macbook-pros-oled-pwm-problem-when-a-better-display-becomes-worse-to-use/
374•MacAnorak•9h ago•202 comments

Handwriting, as a Font

https://ductus.sorenblank.com
45•coinfused•3h ago•8 comments

WebGL Flight Simulator with seed generated terrain

https://baron.by.dai.studio/
30•ranger_danger•2h ago•7 comments

Claude Code and Codex reverse engineered my 1994 Jeep's ECU over a $3 Arduino [video]

https://www.youtube.com/watch?v=WPj3aQ-xxpI
280•envoked•3d ago•148 comments

Eclipse Mosquitto – An open source MQTT broker

https://github.com/eclipse-mosquitto/mosquitto
52•gregsadetsky•4h ago•19 comments

Microsoft 365 outage leads to chlorine gas poisoning of 15 hotel guests

https://www1.wdr.de/nrw/rheinland/rhein-erft-kreis/technischer-defekt-chlor-phantasialand-100.html
275•DeepLogin•4h ago•140 comments

Things That Turbo Pascal Is Smaller Than (2011)

https://prog21.dadgum.com/116.html
178•ksec•9h ago•89 comments

Emacs Is My Browser

https://joshblais.com/blog/emacs-as-my-browser/
162•nyc111•7h ago•81 comments

Understanding Positional Embeddings in Modern LLMs

https://magazine.sebastianraschka.com/p/understanding-positional-embeddings
184•vismit2000•10h ago•23 comments

Vulcan rocket fails during return-to-flight launch, 40 Amazon satellites lost

https://www.space.com/space-exploration/launches-spacecraft/ula-vulcan-centaur-return-to-flight-a...
62•jonbaer•2h ago•25 comments

Clice v1.0 Released: Welcome to Modern C++

https://ykiko.me/en/articles/2105384023094834022/
68•molenzwiebel•5h ago•43 comments

Notes on Mathematics for Engineers (1959) [pdf]

https://websites.umich.edu/~ners311/CourseLibrary/MathNotes.pdf
59•the-mitr•4d ago•15 comments

Aspidistra: A British wartime radio transmitter used for MitM attacks

https://en.wikipedia.org/wiki/Aspidistra_(transmitter)
10•BoxOfRain•3d ago•0 comments

Eval Awareness vs. Eval Paranoia

https://www.lesswrong.com/posts/mepsi7JNKYejq9wry/eval-awareness-vs-eval-paranoia
38•ezrasu•3d ago•17 comments

Keylogger Detection and Containment [pdf]

https://www.cs.vu.nl/~ast/Theses/ortolani-thesis.pdf
4•movsx•1d ago•1 comments

All AI-generated code should be Open Source

https://jakub.jankiewicz.org/blog/ai-code-open-source/
1015•jcubic•8h ago•565 comments

Boeing-Lockheed rocket fails mid-flight, destroys payload of Amazon satellites

https://www.reuters.com/business/aerospace-defense/us-rocket-fails-after-launch-payload-amazon-in...
22•rexbee•1h ago•9 comments

Why did some Apollo missions carry a grenade launcher? (2019)

https://space.stackexchange.com/questions/37775
213•Skyfall106•13h ago•141 comments

Your room can be as bright as the outdoors (2019)

https://www.benkuhn.net/lux/
64•mday404•2d ago•41 comments

Bullet Dodged

https://idiotking.org/archives/2026/10/bullet-dodged-3/
35•surprisetalk•3d ago•28 comments

A NES emulator written in Odin

https://lucypero.com/lucynes.html
97•frostbyte7•10h ago•34 comments

SpaceX catches the Starship to end Flight 15

https://www.spacex.com/launches/starship-flight-15
1617•ls612•1d ago•1190 comments

20 Years of Pyrolog

https://pypy.org/posts/2026/11/20-years-of-pyrolog.html
66•lumpa•3d ago•4 comments

Ask HN: Stripe closed us after one $1,500 invoice and never asked for evidence

36•snirgbs•3h ago•8 comments

What thousands of conversations look like inside a language model

https://operator0x.com/field-notes/qwen-conversation-state-space/
105•josip208•2d ago•29 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.