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Await Is Not a Context Switch: Understanding Python's Coroutines vs. Tasks

https://mergify.com/blog/await-is-not-a-context-switch-understanding-python-s-coroutines-vs-tasks
19•remyduthu•42m ago•8 comments

Statistical Process Control in Python

https://timothyfraser.com/sigma/statistical-process-control-in-python.html
56•lifeisstillgood•3h ago•1 comments

I don't care how well your "AI" works

https://fokus.cool/2025/11/25/i-dont-care-how-well-your-ai-works.html
53•todsacerdoti•1h ago•35 comments

Show HN: KiDoom – Running DOOM on PCB Traces

https://www.mikeayles.com/#kidoom
258•mikeayles•13h ago•31 comments

Image Diffusion Models Exhibit Emergent Temporal Propagation in Videos

https://arxiv.org/abs/2511.19936
30•50kIters•3h ago•4 comments

Surprisingly, Emacs on Android is pretty good

https://kristofferbalintona.me/posts/202505291438/
144•harryday•3d ago•68 comments

Copyparty, the FOSS file server [video]

https://www.youtube.com/watch?v=15_-hgsX2V0
87•franczesko•6d ago•15 comments

Space Truckin' – The Nostromo (2012)

https://alienseries.wordpress.com/2012/10/23/space-truckin-the-nostromo/
96•exvi•9h ago•46 comments

A new bridge links the math of infinity to computer science

https://www.quantamagazine.org/a-new-bridge-links-the-strange-math-of-infinity-to-computer-scienc...
193•digital55•15h ago•92 comments

Trillions spent and big software projects are still failing

https://spectrum.ieee.org/it-management-software-failures
473•pseudolus•23h ago•407 comments

Show HN: We built an open source, zero webhooks payment processor

https://github.com/flowglad/flowglad
317•agreeahmed•18h ago•181 comments

Downsampling: Largest-Triangle-Three-Buckets and the Fourier Transform

https://daniel.mitterdorfer.name/posts/2024-01-30-downsampling-lttb-and-fft/
6•wonger_•4d ago•0 comments

CS234: Reinforcement Learning Winter 2025

https://web.stanford.edu/class/cs234/
121•jonbaer•11h ago•17 comments

1,700-year-old Roman sarcophagus is unearthed in Budapest

https://apnews.com/article/hungary-roman-sarcophagus-discovery-budapest-77a41fe190bbcc167b43d0514...
79•gmays•1d ago•42 comments

How to repurpose your old phone into a web server

https://far.computer/how-to/
249•louismerlin•3d ago•95 comments

Launch HN: Onyx (YC W24) – Open-source chat UI

200•Weves•21h ago•138 comments

New layouts with CSS Subgrid

https://www.joshwcomeau.com/css/subgrid/
226•joshwcomeau•19h ago•65 comments

FLUX.2: Frontier Visual Intelligence

https://bfl.ai/blog/flux-2
316•meetpateltech•19h ago•90 comments

Java Decompiler

http://java-decompiler.github.io
76•mooreds•3d ago•32 comments

BebboSSH: SSH2 implementation for Amiga systems (68000, GPLv3)

https://franke.ms/git/bebbo/bebbossh
42•snvzz•9h ago•10 comments

Python is not a great language for data science

https://blog.genesmindsmachines.com/p/python-is-not-a-great-language-for
252•speckx•19h ago•241 comments

Google Antigravity exfiltrates data via indirect prompt injection attack

https://www.promptarmor.com/resources/google-antigravity-exfiltrates-data
680•jjmaxwell4•17h ago•183 comments

Ilya Sutskever: We're moving from the age of scaling to the age of research

https://www.dwarkesh.com/p/ilya-sutskever-2
327•piotrgrabowski•18h ago•270 comments

Constant-time support coming to LLVM: Protecting cryptographic code

https://blog.trailofbits.com/2025/11/25/constant-time-support-coming-to-llvm-protecting-cryptogra...
87•ahlCVA•22h ago•33 comments

Someone at YouTube Needs Glasses: The Prophecy Has Been Fulfilled

https://jayd.ml/2025/11/10/someone-at-youtube-needs-glasses-prophecy-fulfilled.html
709•jaydenmilne•13h ago•475 comments

Pitch Multiplication (2017)

https://klangnewmusic.weebly.com/direct-sound/pitch-multiplication
10•ofalkaed•3d ago•0 comments

The fall of Labubus and the mush of modern internet trends

https://www.michigandaily.com/arts/digital-culture/the-fall-of-labubus-and-the-mush-of-modern-int...
87•gnabgib•2d ago•131 comments

The Bughouse Effect

https://tsvibt.blogspot.com/2025/11/the-bughouse-effect.html
41•surprisetalk•16h ago•9 comments

Unifying our mobile and desktop domains

https://techblog.wikimedia.org/2025/11/21/unifying-mobile-and-desktop-domains/
159•todsacerdoti•18h ago•42 comments

Marble Springs (1993)

https://www.eastgate.com/MS/Title_184.html
28•prismatic•6d ago•3 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•6mo ago

Comments

stevoski•6mo 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•6mo 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•6mo 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_•6mo ago
Spotbugs or checkstyle etc... would catch these. What does AI add here?
xyst•6mo 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•6mo 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•6mo 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•6mo 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•6mo 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•6mo ago
stupid af
Traubenfuchs•6mo 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•6mo 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•6mo ago
Can the QA team? How does the dev/staging environment help writing less buggy code?
rad_gruchalski•6mo ago
But can you leetcode heh.
TYMorningCoffee•6mo 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.