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Claude Opus 5

https://www.anthropic.com/news/claude-opus-5
1185•alvis•6h ago•649 comments

Postgres LISTEN/NOTIFY actually scales

https://www.dbos.dev/blog/postgres-listen-notify-scalability
159•KraftyOne•4h ago•29 comments

SpaceX Starship Flight 13 livestream [video]

https://www.spacex.com/launches/starship-flight-13
10•cryptoz•42m ago•4 comments

Opus 5 is currently #1 on Artificial Analysis Intelligence Leaderboard

https://artificialanalysis.ai/models
52•aarondong•3h ago•29 comments

Show HN: I simulated closing the Strait of Hormuz on real oil trade data

https://globaloilnetwork.staffinganalytics.io/
47•eliotho•1d ago•21 comments

My security camera shipped a GitHub admin token in its login page

https://hhh.hn/hanwha-github-token/
485•hhh•11h ago•168 comments

India's first privately-developed rocket reaches orbit on debut launch

https://arstechnica.com/space/2026/07/indias-first-privately-developed-rocket-reaches-orbit-on-dr...
458•sohkamyung•4d ago•134 comments

Designing an Ethernet Switch ASIC

https://essenceia.github.io/projects/ethernet_switch_asic/
59•random__duck•4d ago•16 comments

Nvidia, Microsoft, Meta warn against overregulating open-weight models

https://www.cnbc.com/2026/07/24/nvidia-microsoft-meta-open-weight-ai-models.html
452•louiereederson•9h ago•214 comments

Fil-C: Garbage In, Memory Safety Out [video]

https://www.youtube.com/watch?v=5F-2Y1LPRek
89•Bootvis•1d ago•85 comments

An old patent inspired the new "Y-zipper", a three-sided fastener

https://news.mit.edu/2026/three-sided-y-zipper-design-0504
95•crescit_eundo•2d ago•26 comments

Gsxui – Shadcn-style components for Go

https://ui.gsxhq.dev/
54•jackielii•5h ago•8 comments

If coding has been solved, why does software keep getting worse?

https://ptrchm.com/posts/nothing-works-and-everyone-is-euphoric/
419•pchm•14h ago•347 comments

Marimo now runs in PyCharm

https://marimo.io/blog/pycharm
61•cantdutchthis•2d ago•14 comments

Half-Life 2 running natively on HaikuOS

https://discuss.haiku-os.org/t/haiku-nvidia-porting-nvidia-driver-for-turing-gpus/16520?page=18
245•m0do1•10h ago•44 comments

Kimi K3 exploited the latest Redis server

https://twitter.com/fried_rice/status/2080059356322918777
112•Alifatisk•1d ago•34 comments

Firefox Containers Preview

https://blog.mozilla.org/en/firefox/firefox-containers-preview/
192•twapi•3d ago•71 comments

Don't Take the Black Pill [video]

https://www.youtube.com/watch?v=zLZwpH5lCD4
101•signa11•6h ago•68 comments

Show HN: Max Studio Tools – C++ DSP Modules for Max and Ableton Live

https://github.com/apresta/max-studio-tools
11•apresta•2h ago•0 comments

How to Write a Quine

https://czterycztery.pl/slowo/quine-EN.html
8•mci•1d ago•0 comments

Be skeptical of OpenAI's rogue hacker agent story

https://www.theguardian.com/technology/2026/jul/24/openai-rogue-hacker
373•rwmj•6h ago•200 comments

Future euro banknote design proposals

https://www.ecb.europa.eu/euro/banknotes/future_banknotes/html/all-design-proposals.en.html
108•robin_reala•13h ago•102 comments

Flux 3 X Mimic: The Next Generation of Video-Action Models

https://bfl.ai/blog/flux-3-mimic
306•kensai•13h ago•48 comments

The footprints of every building in NYC

https://www.beautifulpublicdata.com/the-footprints-of-every-building-in-nyc/
36•jonathanmkeegan•4d ago•5 comments

Unitree As2-W

https://www.unitree.com/As2-W/
84•MehrdadKhnzd•6h ago•37 comments

IRGC claims it destroyed Amazon's Bahrain data center

https://houseofsaud.com/irgc-claims-destroyed-amazon-bahrain-data-center/
223•thisislife2•13h ago•282 comments

Government orders GitHub to remove Bluetooth-based chat app Bitchat: Jack Dorsey

https://www.thehindu.com/news/national/government-orders-github-to-remove-bluetooth-based-chat-ap...
341•rootkea•8h ago•257 comments

Programming language file extensions that match ISO 3166-1 alpha-2 country codes

https://www.bruh.ltd/blog/programming-language-file-extensions-that-match-an-iso-3166-1-alpha-2-c...
31•speckx•10h ago•18 comments

The case for MUDs in modern times (2018)

https://www.andrewzigler.com/feed/the-case-for-muds-in-modern-times
67•bw86•11h ago•64 comments

I got into YC Startup School by hacking it

https://obaid.wtf/jotbook/2026/07/18/how-i-got-into-yc-by-hacking-it.html
94•speckx•5h ago•60 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.