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Since Chromium 148, Math.tanh is now fingerprintable to link underlying OS

https://scrapfly.dev/posts/browser-math-os-fingerprint/
324•joahnn_s•5h ago•158 comments

GhostLock, a stack-UAF that has existed in all Linux distributions for 15 years

https://nebusec.ai/research/ionstack-part-2/
104•ranger_danger•4d ago•16 comments

Cyberpunk Comics, Manga and Graphic Novels

https://shellzine.net/cyberpunk-comics/
85•zdw•3h ago•21 comments

Tiny Emulators

https://floooh.github.io/tiny8bit-preview/index.html
150•naves•6h ago•9 comments

Designing and assembling my first PCB

https://vilkeliskis.com/b/2026/0711.html
56•tadasv•3h ago•7 comments

So you want to learn physics (second edition, 2021)

https://www.susanrigetti.com/physics
109•azhenley•4d ago•13 comments

Why Vanilla JavaScript

https://guseyn.com/html/posts/why-vanilla-js.html
61•guseyn•3h ago•27 comments

Modernizing Property Tax Assessments in Allegheny County

https://www.prohousingpgh.org/blog/new-report-modernizing-property-tax-assessments-in-allegheny-c...
8•mooreds•48m ago•0 comments

Ask HN: What Are You Working On? (July 2026)

83•david927•5h ago•226 comments

Old and new apps, via modern coding agents

https://terrytao.wordpress.com/2026/07/11/old-and-new-apps-via-modern-coding-agents/
418•subset•15h ago•121 comments

Ask HN: Add flag for AI-generated articles

98•levkk•1h ago•43 comments

Migrating a production AI agent to GPT-5.6: 2.2x faster, 27% cheaper

https://ploy.ai/blog/migrating-a-production-ai-agent-to-gpt-5-6
145•brryant•9h ago•46 comments

The four horsemen behind Postgres outages

https://malisper.me/the-four-horsemen-behind-thousands-of-postgres-outages/
11•craigkerstiens•3d ago•1 comments

Claude Code sends 33k tokens before reading the prompt; OpenCode sends 7k

https://systima.ai/blog/claude-code-vs-opencode-token-overhead
475•systima•8h ago•266 comments

How we can reduce traffic congestion

https://research.google/blog/the-power-of-collaboration-how-we-can-reduce-traffic-congestion/
82•raahelb•11h ago•97 comments

Kode Dot Programmable pocket device for makers, pentesters and geeks

https://kode.diy
44•iNic•5h ago•11 comments

Why write code in 2026

https://softwaredoug.com/blog/2026/07/09/write-code
117•softwaredoug•2d ago•153 comments

LARP – Revenue infrastructure for serious founders

https://www.larp.website/
163•BerislavLopac•9h ago•37 comments

I Learned to Read Again

https://substack.magazinenongrata.com/p/how-i-learned-to-read-again
104•georgex7•8h ago•43 comments

Architecture Description Languages [pdf]

https://ics.uci.edu/~taylor/documents/2000-ADLs-TSE.pdf
22•ascent817•3h ago•1 comments

Profiling the "Abundance" housing bottleneck with real data

https://laxmena.com/same-capacity-less-throughput
26•laxmena•4h ago•12 comments

Automation Without Understanding

https://arxiv.org/abs/2607.06377
97•root-parent•9h ago•41 comments

Vint Cerf, “father of the Internet”, is retiring

https://techcrunch.com/2026/06/30/the-father-of-the-internet-is-finally-retiring/
283•compiler-guy•3d ago•163 comments

Calculix: A Free Software Three-Dimensional Structural Finite Element Program

https://www.calculix.de/
5•joebig•3d ago•0 comments

I love LLMs, I hate hype

https://geohot.github.io//blog/jekyll/update/2026/07/12/i-love-llms.html
333•therepanic•8h ago•201 comments

Mechanistic interpretability researchers applying causality theory to LLMs

https://cacm.acm.org/news/can-we-understand-how-large-language-models-reason/
84•adunk•8h ago•63 comments

Flash-MSA: Accelerating Million-Token Training with Sparse Attention Kernels

https://nanduruganesh.github.io/flash-msa/
24•rawsh•5h ago•0 comments

Against Usefulness

https://www.motivenotes.ai/p/against-usefulness
86•supo•8h ago•22 comments

The One-Step Trap (In AI Research)

http://incompleteideas.net/IncIdeas/OneStepTrap.html
45•jxmorris12•7h ago•8 comments

MacKenzie Scott's giving, in quality-adjusted life years

https://maxghenis.com/mackenzie-scott-qaly/
55•383toast•2h ago•22 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.