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UniFi 5G

https://blog.ui.com/article/introducing-unifi-5g
20•janandonly•1h ago•7 comments

Netflix’s AV1 Journey: From Android to TVs and Beyond

https://netflixtechblog.com/av1-now-powering-30-of-netflix-streaming-02f592242d80
343•CharlesW•8h ago•155 comments

BMW PHEV: Safety fuse replacement is extremely expensive

https://evclinic.eu/2025/12/04/2021-phev-bmw-ibmucp-21f37e-post-crash-recovery-when-eu-engineerin...
213•mikelabatt•7h ago•157 comments

I have been writing a niche history blog for 15 years

https://resobscura.substack.com/p/why-i-have-been-writing-a-niche-history
77•benbreen•13h ago•13 comments

Show HN: Tacopy – Tail Call Optimization for Python

https://github.com/raaidrt/tacopy
22•raaid-rt•5d ago•1 comments

Trick users and bypass warnings – Modern SVG Clickjacking attacks

https://lyra.horse/blog/2025/12/svg-clickjacking/
150•spartanatreyu•8h ago•26 comments

After 40 years of adventure games, Ron Gilbert pivots to outrunning Death

https://arstechnica.com/gaming/2025/12/after-40-years-of-adventure-games-ron-gilbert-pivots-to-ou...
54•mikhael•3d ago•17 comments

Rats Snatching Bats Out of the Air and Eating Them–Researchers Got It on Video

https://www.smithsonianmag.com/smart-news/rats-are-snatching-bats-out-of-the-air-and-eating-them-...
34•bookofjoe•3h ago•5 comments

NeurIPS 2025 Best Paper Awards

https://blog.neurips.cc/2025/11/26/announcing-the-neurips-2025-best-paper-awards/
83•ivansavz•6h ago•13 comments

Transparent leadership beats servant leadership

https://entropicthoughts.com/transparent-leadership-beats-servant-leadership
417•ibobev•18h ago•196 comments

At IT School with Apple Lisa

https://blisscast.wordpress.com/2024/06/04/apple-lisa-gui-wonderland-3/
8•fabiojava•1w ago•0 comments

CUDA-l2: Surpassing cuBLAS performance for matrix multiplication through RL

https://github.com/deepreinforce-ai/CUDA-L2
101•dzign•11h ago•11 comments

Multivox: Volumetric Display

https://github.com/AncientJames/multivox
263•jk_tech•15h ago•36 comments

How elites could shape mass preferences as AI reduces persuasion costs

https://arxiv.org/abs/2512.04047
550•50kIters•23h ago•526 comments

StardustOS: Library operating system for building light-weight Unikernels

https://github.com/StardustOS
61•transpute•9h ago•4 comments

Warner Bros Begins Exclusive Deal Talks With Netflix

https://www.bloomberg.com/news/articles/2025-12-05/warner-bros-is-said-to-begin-exclusive-deal-ta...
28•mfiguiere•4h ago•72 comments

CSS now has an if() conditional function

https://caniuse.com/?search=if
103•aanthonymax•5d ago•45 comments

The Ofcom Files, Part 4: Ofcom Rides Again

https://prestonbyrne.com/2025/12/04/the-ofcom-files-part-4-ofcom-rides-again/
67•parliament32•7h ago•21 comments

Fast trigram based code search

https://github.com/sourcegraph/zoekt
21•cv_h•4h ago•1 comments

State Department to deny visas to fact checkers and others, citing 'censorship'

https://www.npr.org/2025/12/04/nx-s1-5633444/trump-content-moderation-visas-censorship
97•seattle_spring•3h ago•40 comments

Why are 38 percent of Stanford students saying they're disabled?

https://reason.com/2025/12/04/why-are-38-percent-of-stanford-students-saying-theyre-disabled/
606•delichon•14h ago•828 comments

State of AI: An Empirical 100T Token Study with OpenRouter

https://openrouter.ai/state-of-ai
172•anjneymidha•9h ago•75 comments

What's the deal with Euler's identity?

https://lcamtuf.substack.com/p/whats-the-deal-with-eulers-identity
15•surprisetalk•5d ago•10 comments

Thoughts on Go vs. Rust vs. Zig

https://sinclairtarget.com/blog/2025/08/thoughts-on-go-vs.-rust-vs.-zig/
318•yurivish•10h ago•375 comments

Fighting the age-gated internet

https://www.wired.com/story/age-verification-is-sweeping-the-us-activists-are-fighting-back/
208•geox•18h ago•183 comments

I ignore the spotlight as a staff engineer

https://lalitm.com/software-engineering-outside-the-spotlight/
467•todsacerdoti•20h ago•216 comments

Blogging in 2025: Screaming into the Void

https://askmike.org/articles/blogging-in-2025-screaming-into-the-void/
42•askmike•5h ago•24 comments

Show HN: Onlyrecipe 2.0 – I added all features HN requested – 4 years later

https://onlyrecipeapp.com/?url=https://www.allrecipes.com/turkish-pasta-recipe-8754903
155•AwkwardPanda•17h ago•127 comments

What is better: a lookup table or an enum type?

https://www.cybertec-postgresql.com/en/lookup-table-or-enum-type/
31•todsacerdoti•8h ago•12 comments

Django 6

https://docs.djangoproject.com/en/6.0/releases/6.0/
312•wilhelmklopp•11h ago•145 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.