Hacker News: jgavris

New comment by jgavris in "The Lobster Programming Language"

jgavris — Sun, 08 Mar 2026 12:53:37 +0000

Almost spit out my coffee

New comment by jgavris in "Hackers (1995) Animated Experience"

jgavris — Fri, 06 Feb 2026 16:30:32 +0000

They’re trashing our rights!

New comment by jgavris in "Some notes on starting to use Django"

jgavris — Wed, 28 Jan 2026 12:43:35 +0000

I was just in the middle of writing something similar above, thanks!

New comment by jgavris in "Some notes on starting to use Django"

jgavris — Wed, 28 Jan 2026 12:42:48 +0000

The general approach is to do multiple migrations (add first and make new-code work with both, deploy, remove old-code, then delete old-schema) and this is not specific to Django's ORM in any way, the same goes for any database schema deployment. Take a peek at https://medium.com/@pranavdixit20/zero-downtime-migrations-i... for some ideas.

New comment by jgavris in "Some notes on starting to use Django"

jgavris — Wed, 28 Jan 2026 12:39:03 +0000

Of course, ActiveRecord back in 2005.

New comment by jgavris in "Some notes on starting to use Django"

jgavris — Wed, 28 Jan 2026 04:07:06 +0000

The Django ORM / migrations are still basically unmatched in happiness factor.

New comment by jgavris in "Doing gigabit Ethernet over my British phone wires"

jgavris — Sat, 24 Jan 2026 23:49:37 +0000

This is essentially how some fixed wireless providers (like Starry) deliver the last mile (twisted pair).

New comment by jgavris in "Approachable Swift Concurrency"

jgavris — Wed, 31 Dec 2025 03:03:55 +0000

I still feel like Swift 5 (5.2?) was the sweet spot. Right now there are just way too many keywords, making C++ look easy again.

Similarly, I find Combine / GCD code far easier to write and read and understand, and the semantics are better than structured concurrency. I have plenty of production Combine code in use by (hundreds of) millions of people and it hasn't needed to be touched in years.

New comment by jgavris in "Git Branches Have No Rules"

jgavris — Tue, 02 Jan 2024 23:53:05 +0000

Git ‘remotes’ can have rules (hooks that run on push, and decline).

GitHub has ‘branch protection’ which prevents various changes. But GitHub is not Git. A common misconception lately due to its popularity.

Git itself is nothing more than a set of tools to manage the versions of a repository. How you choose to use it is up to you, and what you allow.

Solo developer? Rebase, or don’t.

Do you collaborate? Maybe consider using a SaaS product like GitHub and setup your rules.

New comment by jgavris in "The fun factor of the video game Uplink"

jgavris — Sat, 28 Oct 2023 15:14:58 +0000

Cyberarmy was pretty fun too

New comment by jgavris in "Reflect – Multiplayer web app framework with game-style synchronization"

jgavris — Thu, 19 Oct 2023 01:43:04 +0000

Definitely a fun demo!

New comment by jgavris in "Personalized learning can feel isolating. Whole class learning can feel personal"

jgavris — Thu, 12 Oct 2023 22:54:14 +0000

It’s practically a requirement…let’s say there was no iOS class when I was in school, but there was an App Store.

New comment by jgavris in "Apple Silicon (M1) powered macOS runners are now available in public beta"

jgavris — Mon, 02 Oct 2023 23:14:17 +0000

Indeed, it’s not out of reach and compute density is higher than the Mac Pro with Minis (even the core i9). M1 / M2 is vastly higher.

New comment by jgavris in "Choose Postgres queue technology"

jgavris — Mon, 25 Sep 2023 01:29:46 +0000

I wrote a hacky version of SKIP LOCKED using advisory locks and a recursive CTE before it was released for a job queue. It worked splendidly, along with the transactional semantics of a proper database. I’m surprised more systems don’t realize they need it.

New comment by jgavris in "San Francisco streets clogged as line of Cruise robotaxis come to a standstill"

jgavris — Mon, 14 Aug 2023 23:49:12 +0000

Like a store and forward wifi mesh network? I worked on this in 2008.

New comment by jgavris in "Valve lawyers urge Dota 2 custom game creators to stop all monetization"

jgavris — Fri, 04 Aug 2023 21:20:33 +0000

Lest we forget DotA was a Warcraft 3 mod to begin with…

New comment by jgavris in "Surgeon General says 13 is ‘too early’ to join social media"

jgavris — Sun, 29 Jan 2023 21:09:25 +0000

Oh how I miss the computer labs with Kidpix, Oregon trail, Mavis Beacon, and maybe later Marathon LAN parties (when the instructor left the room for an hour)...

New comment by jgavris in "Just use a monorepo"

jgavris — Thu, 12 Jan 2023 23:22:50 +0000

Even in a private monorepo, Google has tools like Copybara that make it somewhat easy to 'open source' small pieces of it and sync them in and out of a 'public' repo. The benefits of a monorepo and just having to 'git checkout' and your entire environment 'just works' (I'm looking at you, scripting languages and build systems) is not to be taken lightly.

New comment by jgavris in "The road to Dart 3: A fully sound, null safe language"

jgavris — Sat, 10 Dec 2022 16:46:51 +0000

I am fine with applying either OO / FP approaches. This example is a sealed class, it is just my opinion that the OO version reads better. And the added benefit of having the function namespaced / bound to the class for IDE support (autocomplete) and documentation.

New comment by jgavris in "The road to Dart 3: A fully sound, null safe language"

jgavris — Fri, 09 Dec 2022 15:32:12 +0000

Thanks. I'm just wondering why the example didn't show this extension method. It seems more idiomatic to just call it on the receiver instead of passing a parameter.