frontpage.
newsnewestaskshowjobs

Open Source @Github

fp.

Livenerf: Has Opus 5.5 been nerfed yet?

https://github.com/ninjahawk/livenerf
425•bryan0•7h ago•178 comments

Dots: Always-on agents

https://openai.com/index/introducing-dots/
528•alvis•12h ago•397 comments

PSSA: A non-transformer language model written from scratch in Rust

https://github.com/Sparticle62ops/pssa
47•sparticle62•2h ago•12 comments

Tesla takes on $30B in credit as it approaches unprofitability

https://electrek.co/2026/09/29/tesla-takes-on-30-billion-in-credit-as-it-approaches-unprofitability/
40•ciconia•1h ago•16 comments

Responsible Release of AI-Generated Mathematics

https://agmai.org/general-sep29/
22•aureianimus•3h ago•15 comments

U.S. postal inspectors shut down website selling counterfeit postage labels

https://postalemployeenetwork.com/news/2026/09/26/u-s-postal-inspectors-shut-down-website-selling...
201•ilamont•10h ago•119 comments

NASA asked several former SR-71A staffers to help secret restart

https://aviationweek.com/defense/aircraft-propulsion/nasa-asked-several-former-sr-71a-staffers-he...
110•ilamont•19h ago•99 comments

Vermont replacing power plants with home batteries

https://www.bbc.com/future/article/20260928-a-virtual-power-plant-hidden-in-vermont-homes-is-keep...
141•devonnull•11h ago•114 comments

America.gov

https://america.gov/
485•plesiv•15h ago•393 comments

Show HN: Real-time Solar System with 526k asteroids and all tracked satellites

https://space.bl2.net/
178•wanick•10h ago•40 comments

How Delhi cut electricity loss from 50 to 5 percent

https://spectrum.ieee.org/delhi-electricity-loss
485•rbanffy•17h ago•275 comments

GPT 6.1 Sol: Near-Astra intelligence for a fifth of the price

https://openai.com/index/introducing-gpt-6-1-sol/
863•crorella•12h ago•784 comments

Backblaze drive stats for Q2 2026

https://www.backblaze.com/blog/backblaze-drive-stats-for-q2-2026/
142•HieronymusBosch•16h ago•34 comments

Testing WebGPU data layouts with Facet

https://www.mattkeeter.com/blog/2026-08-23-wgpu-facet/
6•luu•1d ago•0 comments

Needed 1+1, built a functional programming language

https://hereticpleb.vercel.app/blog/needed-one-plus-one/
66•birdculture•13h ago•16 comments

Language models for text classification: From bag-of-words to Jev

https://magazine.sebastianraschka.com/p/classifier-history-and-jev
69•Anon84•18h ago•2 comments

PS5 Relapse Exploit

https://github.com/ntfargo/Relapse-Exploit
267•therepanic•14h ago•152 comments

RSS Feeds for Last.fm

https://lfm.xiffy.nl/
16•Baljhin•2h ago•4 comments

Phyllotaxis: An audio-reactive LED display

https://jagi.studio/posts/phyllotaxis/
273•evakhoury•1d ago•45 comments

When oil prices spike, where does the money go?

https://theconversation.com/when-oil-prices-spike-where-does-the-money-go-280763
58•thelastgallon•1d ago•48 comments

We’re forgetting what darkness feels like

https://www.theguardian.com/environment/2026/sep/29/night-sky-darkness-city-regulation
123•pseudolus•11h ago•68 comments

NAND-16: a computer built from 277,248 NAND gates

https://somethingbig.ai/computer
121•rossant•2d ago•68 comments

Ask HN: What are you reading?

211•dan-bailey•16h ago•465 comments

LinkedIn Larpmaxxing

https://hereticpleb.vercel.app/blog/linkedin-larpmaxxing/
37•BurnerBurner•1h ago•32 comments

A Staff Engineer's Guide to Inventing Work

https://sujithjay.com/inventing-work
233•amortize•1d ago•46 comments

Ballmer Peak

https://en.wikipedia.org/wiki/Ballmer_Peak
31•thunderbong•3h ago•0 comments

Show HN: A working 3D model of an Enigma machine

https://enigma.design
52•primitivesuave•12h ago•18 comments

Show HN: NSL – WSL for Linux

https://frostyard.github.io/nsl/
110•bketelsen•14h ago•75 comments

Strange Parodies of Atari 2600 Video Game Box Cover Art (2008)

https://mightygodking.com/2008/04/21/fun-from-yesterday/
29•peter_d_sherman•4h ago•21 comments

Tcl/Tk 9.1

https://www.tcl-lang.org/software/tcltk/9.1.html
260•dmux•12h ago•101 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.