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I built a light that reacts to radio waves [video]

https://www.youtube.com/watch?v=moBCOEiqiPs
53•codetheweb•1h ago•11 comments

Capital One to acquire Brex for $5.15B

https://www.reuters.com/legal/transactional/capital-one-buy-fintech-firm-brex-515-billion-deal-20...
271•personjerry•9h ago•201 comments

TI-99/4A: Leaning More on the Firmware

https://bumbershootsoft.wordpress.com/2026/01/17/ti-99-4a-leaning-more-heavily-on-the-firmware/
18•ibobev•4d ago•5 comments

Talking to LLMs has improved my thinking

https://philipotoole.com/why-talking-to-llms-has-improved-my-thinking/
82•otoolep•3h ago•59 comments

GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers

https://gptzero.me/news/neurips/
801•segmenta•15h ago•428 comments

Show HN: isometric.nyc – giant isometric pixel art map of NYC

https://cannoneyed.com/isometric-nyc/
826•cannoneyed•14h ago•170 comments

Why does SSH send 100 packets per keystroke?

https://eieio.games/blog/ssh-sends-100-packets-per-keystroke/
404•eieio•11h ago•239 comments

I was banned from Claude for scaffolding a Claude.md file?

https://hugodaniel.com/posts/claude-code-banned-me/
468•hugodan•12h ago•369 comments

Qwen3-TTS family is now open sourced: Voice design, clone, and generation

https://qwen.ai/blog?id=qwen3tts-0115
547•Palmik•17h ago•174 comments

Turso is an in-process SQL database, compatible with SQLite

https://github.com/tursodatabase/turso
94•marklit•3d ago•54 comments

Bugs Apple Loves

https://www.bugsappleloves.com
440•nhod•4h ago•161 comments

Writing First, Tooling Second

https://susam.net/writing-first-tooling-second.html
16•blenderob•4d ago•1 comments

Douglas Adams on the English–American cultural divide over "heroes"

https://shreevatsa.net/post/douglas-adams-cultural-divide/
403•speckx•17h ago•394 comments

Improving the usability of C libraries in Swift

https://www.swift.org/blog/improving-usability-of-c-libraries-in-swift/
90•timsneath•7h ago•5 comments

Scaling PostgreSQL to power 800M ChatGPT users

https://openai.com/index/scaling-postgresql/
135•mustaphah•9h ago•50 comments

Your app subscription is now my weekend project

https://rselbach.com/your-sub-is-now-my-weekend-project
306•robteix•4d ago•222 comments

Why medieval city-builder video games are historically inaccurate (2020)

https://www.leidenmedievalistsblog.nl/articles/why-medieval-city-builder-video-games-are-historic...
104•benbreen•6h ago•59 comments

Show HN: Txt2plotter – True centerline vectors from Flux.2 for pen plotters

https://github.com/malvarezcastillo/txt2plotter
5•tsanummy•3d ago•0 comments

Launch HN: Constellation Space (YC W26) – AI for satellite mission assurance

35•kmajid•14h ago•15 comments

CSS Optical Illusions

https://alvaromontoro.com/blog/68091/css-optical-illusions
164•ulrischa•13h ago•14 comments

Show HN: Text-to-video model from scratch (2 brothers, 2 years, 2B params)

https://huggingface.co/collections/Linum-AI/linum-v2-2b-text-to-video
70•schopra909•14h ago•13 comments

Stunnel

https://www.stunnel.org/
57•firesteelrain•6h ago•16 comments

'Askers' vs. 'Guessers' (2010)

https://www.theatlantic.com/national/2010/05/askers-vs-guessers/340891/
115•BoorishBears•19h ago•76 comments

Recent discoveries on the acquisition of the highest levels of human performance

https://www.science.org/doi/abs/10.1126/science.adt7790
122•colincooke•13h ago•58 comments

'Active' sitting is better for brain health: review of studies

https://www.sciencealert.com/not-all-sitting-is-equal-one-type-was-just-linked-to-better-brain-he...
94•mikhael•12h ago•34 comments

Composing APIs and CLIs in the LLM era

https://walters.app/blog/composing-apis-clis
49•zerf•13h ago•12 comments

In Europe, wind and solar overtake fossil fuels

https://e360.yale.edu/digest/europe-wind-solar-fossil-fuels
560•speckx•16h ago•556 comments

Show HN: BrowserOS – "Claude Cowork" in the browser

https://github.com/browseros-ai/BrowserOS
56•felarof•14h ago•24 comments

Design Thinking Books (2024)

https://www.designorate.com/design-thinking-books/
277•rrm1977•19h ago•126 comments

Keeping 20k GPUs healthy

https://modal.com/blog/gpu-health
109•jxmorris12•4d ago•48 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•8mo ago

Comments

stevoski•8mo 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•8mo 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•8mo 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_•8mo ago
Spotbugs or checkstyle etc... would catch these. What does AI add here?
xyst•8mo 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•8mo 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•8mo 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•8mo 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•8mo 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•8mo ago
stupid af
Traubenfuchs•8mo 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•8mo 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•8mo ago
Can the QA team? How does the dev/staging environment help writing less buggy code?
rad_gruchalski•8mo ago
But can you leetcode heh.
TYMorningCoffee•8mo 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.