Hacker News: jupp0r

New comment by jupp0r in "Training students to prove they're not robots is pushing them to use more AI"

jupp0r — Sat, 07 Mar 2026 21:10:56 +0000

And what would the goal of that be? I thought the goal of education was... education. The grading is not goal in itself. Will this really motivate kids to do better?

New comment by jupp0r in "We're Training Students to Write Worse to Prove They're Not Robots"

jupp0r — Sat, 07 Mar 2026 21:07:31 +0000

Sounds like a great opportunity for kids in high school to learn how to feed back the AI detection results into the model and have this process be automated. Next level would be fine tuning the model via reinforcement learning and sharing it with your friends via Hugging Face.

New comment by jupp0r in "xAI joins SpaceX"

jupp0r — Mon, 02 Feb 2026 23:24:05 +0000

See Dyson Sphere: https://en.wikipedia.org/wiki/Dyson_sphere

New comment by jupp0r in "Banned C++ features in Chromium"

jupp0r — Sat, 24 Jan 2026 05:30:38 +0000

Dependencies. There are billions of lines of C++ out there that have been optimized and production hardened over decades that you might want to reuse. Rust lang interoperability with anything but C sucks in practice.

New comment by jupp0r in "Async DNS"

jupp0r — Sat, 13 Dec 2025 00:09:16 +0000

libuv? libevent?

New comment by jupp0r in "Palantir Thinks College Might Be a Waste. So It's Hiring High-School Grads"

jupp0r — Sun, 02 Nov 2025 16:47:18 +0000

https://archive.ph/https://www.wsj.com/business/palantir-thi...

New comment by jupp0r in "Formatting code should be unnecessary"

jupp0r — Mon, 08 Sep 2025 04:28:16 +0000

I generally agree, but max line length being so high you have to horizontally scroll while reading code is very detrimental to productivity.

New comment by jupp0r in "Ruby on Rails Audit Complete"

jupp0r — Mon, 16 Jun 2025 07:12:31 +0000

Rails is in steady decline [1].

[1] https://trends.google.com/trends/explore?date=all&geo=US&q=%...

New comment by jupp0r in "Ruby on Rails Audit Complete"

jupp0r — Mon, 16 Jun 2025 07:10:12 +0000

> What caused the drop in popularity in RoR?

Async/await. JavaScript and all other modern languages and frameworks have a great concurrency story. Rails still hasn't (but it's coming next year, it's been coming next year for a decade).

New comment by jupp0r in "JavaScript's New Superpower: Explicit Resource Management"

jupp0r — Sat, 17 May 2025 18:05:36 +0000

I disagree. Hiding async makes reasoning about code harder and not easier. I want to know whether disposal is async and potentially affected by network outages, etc.

New comment by jupp0r in "All four major web browsers are about to lose 80% of their funding"

jupp0r — Thu, 01 May 2025 06:28:02 +0000

I think you should appreciate more how much the tens of billions of dollars Google has invested in Chrome has benefited the web and open source in general. Some examples:

Webrtc. Google’s implementation is super widely used in all sorts of communications software.

V8. Lots of innovation on the interpreter and JIT has made JS pretty fast and is reused in lots of other software like nodejs, electron etc.

Sandboxing. Chrome did a lot of new things here like site isolation and Firefox took a while to catch up.

Codecs. VP8/9 and AV1 broke the mpeg alliance monopoly and made non patented state of the art video compression possible.

SPDY/QUIC. Thanks to Google we have zero RTT TLS handshakes and no head of line blocking HTTP with header compression, etc now and H3 has mandatory encryption.

New comment by jupp0r in "Significant performance improvements with Edge 134"

jupp0r — Wed, 16 Apr 2025 09:26:25 +0000

Aside: it’s impressive how the whole blog post does not mention a single detail of what they actually did to achieve these performance improvements. Code changes, really?

New comment by jupp0r in "Meta antitrust trial kicks off in federal court"

jupp0r — Mon, 14 Apr 2025 20:26:45 +0000

There is also the question of cause and effect. Did Instagram grow to what it is today because of a decade of investments from Meta?

New comment by jupp0r in "Germany is unlocking billions to supercharge its military at a seismic moment"

jupp0r — Sun, 23 Mar 2025 19:10:57 +0000

The point of deterrence is that you spend the money so the chance of Russia doing something like a land invasion of Europe is decreased.

The much more likely scenario that Europeans are wanting to prevent is a limited invasion in the Baltics or Balkans in order to politically divide and damage western democracies.

New comment by jupp0r in "Germany is unlocking billions to supercharge its military at a seismic moment"

jupp0r — Sun, 23 Mar 2025 19:04:54 +0000

We need to invest a lot of money to stop climate change. Renewable energy projects are very capital intensive compared to fossil fuel equivalents.

New comment by jupp0r in "Germany is unlocking billions to supercharge its military at a seismic moment"

jupp0r — Sun, 23 Mar 2025 19:00:47 +0000

This ironically applies both to climate change and being a decade too late to react to Russia's expansionist actions.

New comment by jupp0r in "Germany is unlocking billions to supercharge its military at a seismic moment"

jupp0r — Sun, 23 Mar 2025 18:59:27 +0000

You're being overly dramatic. Germany has been spending low amounts of money on its military for two and a half decades. Circumstances changed and spending needs to be increased to adjust to the new situation. This is not militarization, it's the state fulfilling fundamental purpose of providing external security for its citizens. Spending is going to be less (relative to GDP) than in the 70s and 80s.

New comment by jupp0r in "RubyLLM: A delightful Ruby way to work with AI"

jupp0r — Mon, 17 Mar 2025 14:36:10 +0000

The Rails documentation has lots of info about this: https://guides.rubyonrails.org/tuning_performance_for_deploy...

Concurrency support is missing from the language syntax and this particular library as a concept. This is by design, to not distract from beautiful code. Your request will make zero progress and take up memory while waiting for the LLM answer. Other threads might make progress on other requests, but in real world deployments this will be a handful (<10). This server will get 10s of requests per second when something written in JS or Go will get many 1000s.

It’s amazing how the Ruby community argues against their own docs and doesn’t acknowledge the design choices their language creators have made.

New comment by jupp0r in "RubyLLM: A delightful Ruby way to work with AI"

jupp0r — Sun, 16 Mar 2025 19:10:50 +0000

Yes, it does. Ruby has a global interpreter lock (GIL) that prevents multiple threads to be executed by the interpreter at the same time, so Puma does have threads, they just can’t run Ruby code at the same time. They can hide IO though.

New comment by jupp0r in "RubyLLM: A delightful Ruby way to work with AI"

jupp0r — Sun, 16 Mar 2025 02:19:11 +0000

Rails is a hot ball of global mutable state. Good luck with threads.