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AlphaProof Code

https://deepmind.google/blog/introducing-alphaproof-code/
26•ilreb•19m ago•5 comments

Amazon saves millions by replacing Sonnet 4.6 with Strands Decider

https://strandsagents.com/blog/amazon-saves-millions-replacing-sonnet-with-strands-decider/
384•aloukissas•6h ago•133 comments

Claude Fable 5.2 and Mythos 5.2

https://www.anthropic.com/claude-fable-and-mythos-5-2
671•lairv•18h ago•848 comments

Fossil CO2 emissions decrease by 0.4% in 2026

https://news.exeter.ac.uk/faculty-of-environment-science-and-economy/fossil-co2-emissions-decreas...
42•giuliomagnifico•3h ago•35 comments

USPS now offers official ZIP Code boundary polygons

https://postalpro.usps.com/zcb
641•munro•16h ago•323 comments

Your TV can see through walls

https://maurycyz.com/projects/fading/
161•Curiositry•7h ago•58 comments

Queens Public library under ransomware attack e-borrowing suspended

https://connect.queenslibrary.org/
62•rustyhancock•3h ago•48 comments

Show HN: Ghanaian street games you can play in the browser

https://www.ghanastreetgames.com/
16•samuelaidoo45•1d ago•4 comments

Fireworks AI security breach impacts Notion and their customers

https://www.notion.com/help/security-incident-involving-a-third-party-ai-vendor
75•werrett•5h ago•21 comments

Billion Watts in the Speaker [video]

https://www.youtube.com/watch?v=PHOcTXYaMfg
32•Element_•2d ago•13 comments

Locating the source of a mysterious beep

https://simonwillison.net/2026/Nov/9/mysterious-beeps/
224•bigwheels•12h ago•104 comments

How hard is it to check for whitespace?

https://serce.me/posts/2026-10-30-how-hard-is-it-to-check-for-whitespace
53•theanonymousone•3d ago•13 comments

Payments Canada announces launch of Canada's Real-Time Rail (RTR) payment system

https://www.payments.ca/canada-launches-real-time-rail-bringing-247-payment-infrastructure-nation...
541•ocd•20h ago•304 comments

Foldable Flight: The Best Paper Airplanes

https://www.foldableflight.com
1073•vismit2000•1d ago•152 comments

E-means: Outperforming k-means in one-tenth the epochs

https://e-means.github.io/
424•porridgeraisin•17h ago•50 comments

Horible public key tricks

https://maurycyz.com/projects/badcert/
185•Curiositry•12h ago•60 comments

Ultorg: The User Interface for Relational Databases

https://www.ultorg.com/
90•Ivoah•8h ago•28 comments

ClickHouse Acquires Xata

https://xata.io/blog/xata-is-joining-clickhouse
52•mebcitto•6h ago•7 comments

Semi-transparent, colored cadmium telluride photovoltaic panels in agrivoltaics

https://www.anthropocenemagazine.org/2026/10/magenta-solar-panels-may-be-agrivoltaics-cleverest-t...
324•speckx•21h ago•220 comments

AI usage generates a fragile codebase

https://evanxmerz.com/post/ai-usage-generates-a-fragile-codebase/
88•plun9•2h ago•91 comments

What Constant Surveillance Is Doing to Children

https://www.theatlantic.com/magazine/2026/12/location-tracking-apps-parental-surveillance/689031/
29•FinnLobsien•1h ago•15 comments

Formalizing CPython

https://broyojo.com/python-formalization/
89•carnevalem•10h ago•35 comments

A primer on GPUs and kernel optimization

https://www.nabo.dev/blogs/kernel-primer
166•nomi_uw•4d ago•14 comments

'C:\> FORMAT C:' – relax, it's just a screen saver

https://fakedos.com/
12•TheIncredibleCh•1h ago•4 comments

Show HN: Every satellite that passed over any place this week, and its photos

https://www.watched.earth
384•a585gupt•18h ago•66 comments

The first 300-millimeter power silicon carbide (SiC) wafer

https://www.infineon.com/press-release/2026/infpr202611-028
143•sshah03•18h ago•81 comments

Google Gemini routes personal Drive files and emails to human annotators

https://github.com/thisisme6598/gemini_files/
642•gf74918•18h ago•135 comments

Muse Ember: Our smallest, most efficient model

https://research.meta.ai/blog/muse-ember
311•dvaplima•18h ago•132 comments

On Being an Engineer in 2026

https://twitter.com/shaharglazner/status/2119796029256032278
134•talboren•21h ago•214 comments

Time for AVIF everywhere?

https://www.michaelponders.com/2026/11/isnt-it-time-for-avif-everywhere.html
88•speckx•2d ago•63 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.