Hacker News: sleepy_keita

New comment by sleepy_keita in "The MacBook Neo"

sleepy_keita — Thu, 12 Mar 2026 01:34:58 +0000

I thought this too. If they're using the camera to do brightness, it needs to be on when the user isn't using it - if the activity LED is tied to the camera power rail (not sure if it is), it might look like there's something nefarious going on. No way Apple would let that go out the door.

New comment by sleepy_keita in "World-first gigabit laser link between aircraft and geostationary satellite"

sleepy_keita — Fri, 06 Mar 2026 08:31:07 +0000

They say "error-free connection", which implies 2-way communication, right?

New comment by sleepy_keita in "Selling SaaS in Japan"

sleepy_keita — Tue, 20 Jan 2026 02:14:50 +0000

I'm still pre-launch, but I've attended (and presented at) a couple conferences / industry events for my SaaS in Japan. You can get a lot of traction by getting out there and actually talking to people. Networking is important (probably this is the same anywhere?) and talking to other presenters is as important as talking to potential customers, because you can get that relationship going for mutual benefit.

New comment by sleepy_keita in "AI is forcing us to write good code"

sleepy_keita — Tue, 30 Dec 2025 00:15:42 +0000

Humans can work with these cases better though because they have access to better memory. Next time you see "iteration_count", you'll know that it actually has a sum, while a new AI session will have to re-discover it from scratch. I think this will only get better as time goes on, though.

New comment by sleepy_keita in "It's Always TCP_NODELAY"

sleepy_keita — Tue, 23 Dec 2025 00:38:59 +0000

Yeah, it's named after the person who wrote the RFC - John Nagle. Wild coincidence! https://datatracker.ietf.org/doc/html/rfc896

New comment by sleepy_keita in "Heroku Support for .NET 10"

sleepy_keita — Wed, 12 Nov 2025 00:33:32 +0000

Yeah. It used to be the go-to for starting simple projects. We have quite a bit of other options in this space now, though - GH Pages, Cloudflare workers, Vercel, Netlify, etc etc...

New comment by sleepy_keita in "Why do some radio towers blink?"

sleepy_keita — Wed, 29 Oct 2025 06:33:25 +0000

They're saying that you have 3 banks of lights, each connected to one phase of the 3 phase input. That way, when only 1 bank goes out, it's easy to see that one phase is out.

New comment by sleepy_keita in "Why is Venus hell and Earth an Eden?"

sleepy_keita — Tue, 23 Sep 2025 07:36:34 +0000

I was thinking more on the lines of "if marine life never found itself stranded on land, it wouldn't need to evolve to survive on the land"

New comment by sleepy_keita in "Why is Venus hell and Earth an Eden?"

sleepy_keita — Mon, 22 Sep 2025 05:30:36 +0000

Was just rereading - it was the radioactivity and the large natural satellite that was unique in his universe. Tides are interesting because once you have life in the oceans, it's a kind of forcing function to adapt to land conditions

New comment by sleepy_keita in "Rv, a new kind of Ruby management tool"

sleepy_keita — Wed, 27 Aug 2025 02:27:39 +0000

Maybe - but in this case, Ruby is written in C, it uses C extensions when performance matters, but tooling for the Ruby language itself is all in Ruby. Rust isn't replacing the use of C in the core of Ruby (yet) - it's stepping in to the area where Ruby would have been traditionally used.

New comment by sleepy_keita in "Rv, a new kind of Ruby management tool"

sleepy_keita — Tue, 26 Aug 2025 22:27:32 +0000

I find it interesting how Rust is gaining momentum in tooling like uv and now rv.

New comment by sleepy_keita in "Gemma 3 270M: Compact model for hyper-efficient AI"

sleepy_keita — Fri, 15 Aug 2025 02:55:28 +0000

Simulated a RAG, and it still gets it pretty wrong.

> The tallest mountains on Earth, in descending order: 1. Mount Everest, 8849m 2. K2, 8611m 3. Kangchenjunga, 8586m

> Tell me the second tallest mountain on Earth.

The second tallest mountain on Earth is *Mount Everest*.

New comment by sleepy_keita in "Please Don't Promote Wayland"

sleepy_keita — Wed, 13 Aug 2025 01:30:22 +0000

The IME problem was the only thing keeping me on "legacy" X11 a couple years ago. Is it still the same today?

New comment by sleepy_keita in "Postgres LISTEN/NOTIFY does not scale"

sleepy_keita — Fri, 11 Jul 2025 01:04:33 +0000

LISTEN/NOTIFY was always a bit of a puzzler for me. Using it means you can't use things like pgbouncer/pgpool and there are so many other ways to do this, polling included. I guess it could be handy for an application where you know it won't scale and you just want a simple, one-dependency database.

New comment by sleepy_keita in "Honda conducts successful launch and landing of experimental reusable rocket"

sleepy_keita — Wed, 18 Jun 2025 00:25:19 +0000

No, it was just the name of the person who started the company. https://en.wikipedia.org/wiki/Soichiro_Honda Lots of Japanese companies are like this. See also Toyota.

New comment by sleepy_keita in "My AI skeptic friends are all nuts"

sleepy_keita — Mon, 02 Jun 2025 21:34:45 +0000

Me too -- actually, I'd say that the LLMs I use these days (Sonnet 4 and GPT4.1, o4, etc) are pretty good at rust.

Show HN: A tool to post-process MVT vector tiles quickly

sleepy_keita — Mon, 26 May 2025 02:58:10 +0000

I'm a big fan of Protomaps' OSM vector tiles [0], but I wanted to tweak them just a bit (removing features and tags based on some conditions). Instead of regenerating the tiles from scratch using Planetiler, I made a tool that takes an input PMTiles archive and a filter GeoJSON, and spits out the filtered tiles. Filtering is performed by a mapbox/maplibre style spec-inspired filter language in the properties of each GeoJSON feature, so you can apply different rules for different regions.

Eventually, I'll probably add some features like adding new features, but for now, this is good for 90% of what I need the tiles to do.

[0] https://protomaps.com/

Comments URL: https://news.ycombinator.com/item?id=44093544

Points: 1

# Comments: 1

New comment by sleepy_keita in "Reverse geocoding is hard"

sleepy_keita — Mon, 28 Apr 2025 00:18:51 +0000

Japan publishes new CRSes after large earthquakes to account for drift. The M9 earthquake in 2011 recorded a maximum shift of 5 meters!

New comment by sleepy_keita in "Reverse geocoding is hard"

sleepy_keita — Mon, 28 Apr 2025 00:16:29 +0000

What were some other problems you ran in to when putting OSM in to ES? (I've had this thought before too, I'm curious why/how you did it)

New comment by sleepy_keita in "Google Maps Doesn't Know How Street Addresses Work"

sleepy_keita — Fri, 25 Apr 2025 00:27:07 +0000

Adresses are notoriously hard, and it varies from country to country, and even within countries. I've been working on Japanese address data, and while you may be able to trust Google with an address in the city, there's a large probability that it'll send you somewhere else (sometimes > 10km) in rural areas.