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I'm too dumb for Zig's new IO interface
Karl Seguin's Blog - A mix of coding and creative writing
New
The latest blog posts to take off on Hacker News. 14,537 posts.
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My experience creating software with LLM coding agents – Part 2 (Tips)
moved to https://blog.efitz.net/posts/my-experience-creating-software-with-llm-coding-agents-part-2-tips/
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Static sites with Python, uv, Caddy, and Docker
My preferred deployment stack for Python-built static sites.
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A guide to Gen AI / LLM vibecoding for expert programmers
I get it, you’re too good to vibe code. You’re a senior developer who has been doing this for 20 years and knows the system like the back of your hand. Or maybe you’re the star individual contributor who is the only person who can ever figure out how to solve the hard problems. Or maybe you’re the professor who…
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Go is still not good
Previous posts Why Go is not my favourite language and Go programs are not portable have me critiquing Go for over a decade.
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Io_uring, kTLS and Rust for zero syscall HTTPS server
Around the turn of the century we started to get a bigger need for high capacity web servers. For example there was the C10k problem paper.
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The unbearable slowness of AI coding
I’ve been coding entirely with Claude Code for the past two months. At first it was exhilarating. I was speeding through tasks. I was committing like mad.
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The Core of Rust
within Rust is a smaller language struggling to get out
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Using Podman, Compose and BuildKit
For my day job , I need to build and run a Docker Compose project. However, because Docker doesn’t play well with nftables and I prefer a rootless + daemonless approach, I’m using Podman .
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Why is D3 so Verbose?
Curious why D3.js code looks long and complicated? I quickly explain why D3 is verbose, how it gives developers control, and what makes it powerful for data visualisation.
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The two versions of Parquet
The adoption of Parquet version 2 is limited due to the lack of support in the ecosystem, which affects its evolution despite its improvements in compression and performance.
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Debugging Behind the Iron Curtain (2010)
I program my home computer, beam myself into the future
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Why are anime catgirls blocking my access to the Linux kernel?
Hey… quick question, why are anime catgirls blocking my access to the Linux kernel?
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Modern CI is too complex and misdirected (2021)
The state of CI platforms is much stronger than it was just a few years ago. Overall, this is a good thing: access to powerful CI platforms enables software developers and companies to ship more reliable software more frequently, which benefits its users/customers. Centralized CI platforms like GitHub Actions, GitLab…
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CRDT: Text Buffer
Collaboratively editing strings of text is a common desire in peer-to-peer applications. For example, a note-taking app might represent each document as a single collaboratively-edited string of text.
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Emacs as your video-trimming tool
Marcin ‘mbork’ Borkowski has a nice post showing us how he trims video clips from our beloved editor. Trimming clips is something I do from time to ti...
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Without the futex, it's futile
Review: It's a history text, not a CS text
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Left to Right Programming
Programs Should Be Valid as They Are Typed
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MCP doesn't need tools, it needs code
Exploration into providing MCPs with the most powerful of all tools: code.
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I Prefer RST to Markdown (2024)
I will never stop dying on this hill
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Lessons learned from building a sync-engine and reactivity system with SQLite
Welcome to my personal blog! I use it to share what I'm currently learning or thinking about, usually on topics related to technology, business, and health.
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Apple's new Processor Trace instrument is incredible
The new Processor Trace instrument has flown under the radar with this years WWDC announcements but many developers will find it truly indispensable.
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Traps to Developers
HTML and CSS
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Good system design
I see a lot of bad system design advice. One classic is the LinkedIn-optimized “bet you never heard of queues” style of post, presumably aimed at people who are…
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TextKit 2 – The Promised Land
After 4 years with Apple's TextKit 2: The promised 'better' text engine has unstable scrolling, unreliable height estimates, and viewport issues so bad that even Apple's TextEdit suffers from them. Good architecture, but the implementation makes it frustratingly difficult for real-world apps.
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I accidentally became PureGym’s unofficial Apple Wallet developer
How I reverse-engineered PureGym's API to build a working Apple Wallet pass with PassKit, Vapor, and mitmproxy - end-to-end iOS reverse engineering walkthrough.
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Blurry rendering of games on Mac
ProblemSolutionAffected GamesWhat Apple could do Problem I’ve submitted the issue described in this post to Apple as FB13375033. This issue has been open since September of 2023. If you game …
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We rewrote the Ghostty GTK application
We just completed rewriting the Ghostty GTK application fully embracing the GObject type system from Zig and also verifying with Valgrind every step of the way. The result is a more feature rich, stable, and maintainable Ghostty on Linux and BSD.