1441
Developing a Beautiful and Performant Block Editor in Qt C++ and QML
How I developed Daino Notes block editor from scratch.
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The latest blog posts to take off on Hacker News. 21,817 posts.
1442
How uv got so fast
uv’s speed comes from engineering decisions, not just Rust. Static metadata, dropping legacy formats, and standards that didn’t exist five years ago.
1443
Package managers keep using Git as a database, it never works out
Git repositories seem like an elegant solution for package registry data. Pull requests for governance, version history for free, distributed by design. But as registries grow, the cracks appear.
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Unix "find" expressions compiled to bytecode
In preparation for a future project, I was thinking about at the unix find utility . It operates a file system hierarchies, with basic operations selected and filtered using a specialized expression language. Users compose operations using unary and binary operators, grouping with parentheses for precedence. find may…
1445
Codex vs. Claude Code (today)
Every AI tool has its strengths and weaknesses, and the only way to discover what they are is by using them.
1446
Building an AI agent inside a 7-year-old Rails monolith
We run a multi-tenant Rails application with sensitive data and layered authorization. In this post, I walk through how I added the first AI agent tool using RubyLLM, Pundit policies, and our existing Algolia search, without introducing a parallel system or loosening constraints.
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Ruby 4.0.0
We are pleased to announce the release of Ruby 4.0.0.Ruby 4.0 introduces “Ruby Box” and “ZJIT”, and adds many improvements.
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Microsoft please get your tab to autocomplete shit together
What do you think is gonna happen after I press tab when looking at this screenshot?
1450
When compilers surprise you
Sometimes compilers can surprise and delight even a jaded old engineer like me
1451
Avoid Mini-Frameworks
I work in Google Ads in the past several years. Over time, I've seen one pattern came along again and again, causing endless pain for developers, that is, creating mini-frameworks.
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Test, don't just verify
AI-assisted mechnical proving companies are raising funds on billion dollar valuations , new people are trying proof assistants, overwhelmingly Lean, at unprecedented rates. Models achieve fascinating results in competitions previously considered to contain some of the hardest problems in the world, such as IMO, ICPC…
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Instant database clones with PostgreSQL 18
Learn how to clone PostgreSQL databases instantly using reflinks. Turn slow template copies into milliseconds with PostgreSQL 18's new file copy options.
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Lotusbail npm package found to be harvesting WhatsApp messages and contacts
Secure the modern software stack with Koi. Gain visibility, context, and real-time protection over extensions, MCPs, and autonomous AI agent endpoints.
1455
The Algebra of Loans in Rust
The heart of Rust borrow-checking is this: when a borrow is taken, and until it expires, access to the borrowed place is restricted. For example you may not read from a place while it is mutably borrowed.
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The Illustrated Transformer
Discussions: Hacker News (65 points, 4 comments), Reddit r/MachineLearning (29 points, 3 comments) Translations: Arabic, Chinese (Simplified) 1, Chinese (Simplified) 2, French 1, French 2, Italian, Japanese, Korean, Persian, Russian, Spanish 1, Spanish 2, Vietnamese Watch: MIT’s Deep Learning State of the Art lecture…
1457
Archiving Git branches as tags
I have a spicy git alias that allows me to "archive" old git branches by converting them to tags, making them less visible across git tooling. # ~/.gitconfig…
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Scaling LLMs to Larger Codebases
Where to focus investments to best leverage AI tooling
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A guide to local coding models
What you need to know about local model tooling and the steps for setting one up yourself
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Get an AI code review in 10 seconds
Personal Musings and Transcripts
1462
Using Vectorize to build an unreasonably good search engine in 160 lines of code
PartyKit now includes a vector database and access to an embedding model. Here’s a guide on how to use them to build a search engine.
1463
How GNU Guile is 10x better (2021)
In Rust at Facebook by Fitzhardinge of the Mercurial team , Jeremy says that a new language must be 10x better at something than one of the (other) incumbent languages.
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Structured outputs create false confidence
Constrained decoding seems like the greatest thing since sliced bread, but it often forces models to prioritize output conformance over output quality.
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Coarse is better
Make AI weird again.
1466
Pure Silicon Demo Coding: No CPU, No Memory, Just 4k Gates
In addition to the VGA donut , I submitted two other entries in the Tiny Tapeout 8 demo competition , where you submit a "tiny" ASIC design (room for about 4000 logic gates) that outputs 2-bit RGB to a VGA port and 1-bit audio to a speaker. One was a an old school C64/Amiga intro type of thing, and the other was a…
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Skills Officially Comes to Codex
Give ChatGPT and Codex new capabilities and expertise
1468
The Polyglot NixOS
Recently a colleague mentioned building NixOS images that run unchanged on multiple architectures. Given the past adventures on this blog with systemd-repart and cross-compiling NixOS, I decide to give this a go.
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Kernighan's Lever
Everyone knows that debugging is twice as hard as writing a program in the first place. So if you're as clever as you can be when you write it, how will you ever debug it?