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Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.

• simdsearch — A SIMD substring search in a header, and the benchmarks it was built with.

  CommitsCheckout v5; drop paper refs and docs/comment slop · CI on both backends and a bump-driven Release workflow · Package the kernels as a library and fix the review findings

  benchmarksRelated

Builds developer tools — SST, and now OpenCode at Anomaly. Posts constantly on x.com and writes almost never; the blog stopped in 2021.

• more codemode fun, doing a large mysql operation and the agent wanted to do it 50K rows at a time it writes a single codemode script which runs it in a loop and then you visualize it step by step even though it's code

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Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.

• A new fast_float release... fast_float is a super fast number parser in C++ (used by GCC, MySQL, your browser...). The latest release adds support for parsing numbers following the JavaScript standard, so things like 05.1 can be accepted (!!!).

  JavaScriptRelated

• If anyone wants a nice side project... The fast number parsing fast_float (part of GCC, and other important systems like MySQL) is not always exact when dealing with 16-bit float parsing (specifically float16_t). That is, some number strings can lie in between two numbers and the rounding is wrong. In fact, nobody has done a proper analysis of the implementation to insure that it is correct. Yeah. I could ask my AI, but it is still work, especially because I do not trust anyone, not even an AI, to get it correct the first time around. Contributions invited.

  github.com

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Full-stack developer, creator of Tailwind CSS; writes at adamwathan.me and makes courses and screencasts for web developers.

• Fun piece of history — Tailwind was extracted from a hosted checkout product I was working on back in 2017. Sort of poetic to end up at Shopify almost 10 years later!

  CSSRelated

British open-standards and open-source technologist, formerly of the UK Government Digital Service and the W3C Advisory Committee. Blogs at shkspr.mobi, where he posts a book review most weeks.

• A reasonably practical guide to validating RFC 9421 HTTP Signatures for ActivityPub in PHP

  If you're reading this, you've probably been hitting your head against a brick wall trying to parse and decipher the new HTTP Signatures sent by Mastodon and other Fediverse servers. This is a basic and somewhat incompl…

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Usability pioneer; co-founder of Nielsen Norman Group and founder of UX Tigers; author of the ten usability heuristics and of Jakob's Law.

• Gestalt Principles for Visual UI Design

  Users parse a layout before they read its labels. Whitespace, borders, alignment, color, and motion determine what belongs together. When these cues fight the content, users attach the label, price, warning, status, or…

  AI alignmentRelated

Chilean web engineer building web experiences since 2006; co-founder of Media Creators and writes at iolivares.com.

• Si levantaste Apache y MySQL desde el panelito, no eres old. Eres patrimonio. PHP 4, rodilla incluida.

  English, from SpanishIf you started Apache and MySQL from the little panel, you're not old. You're a heritage asset. PHP 4, knee and all.

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Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.

• Parsing IP addresses in C# at crazy speeds

  We are all familiar with IP addresses such as 192.168.0.1. They are typically written as four numbers in the range 0 to 255 inclusive, separated by dots. In C#, you can parse them with the standard library using IPAddre…

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Software engineer who writes about low-level and systems programming at nullprogram.com; author of the Elfeed feed reader, the Endlessh SSH tarpit and Enchive.

• pdjson — C JSON parser library that doesn't suck

  CommitsAdd retirement note · Do not count a value that failed to parse · Terminate tokens abandoned part way through

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Machine learning engineer working on recommender systems, personalization and information retrieval. Previously worked on LLMs and LLM infrastructure at Mozilla.ai and on ML and recsys at Duo, Tumblr, Automattic and Comcast; wrote the 'What are embeddings?' text and ran the Normconf conference.

• Write for people

  Something I’ve noticed recently is that I am no longer able to read and parse PR titles and descriptions across the internet. I don’t think I stopped being able to read or understand code, but now that we ar…

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Creator of Homebrew, the macOS package manager, and a Swift developer.

• git-cryobank — Archive Git repositories over SSH, browse them on the web, then safely Trash the local checkout

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Web developer; former head of engineering at Flickr, author of Building Scalable Web Sites, and co-founder and CTO of Slack.

• c4.citycreator.com — Remember to put your duo app secret into secrets/duosecretkey.

  Commitsmake sure if count is zero, we're still on page 1 · recreate missing schemas (comments, votes, faq, gallery) + saved gallery columns · port legacy mysql_*/HTTP_POST_VARS code to PHP 8 / db_*

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Programmer and writer known for detailed source code reviews of classic game engines, and author of the Game Engine Black Book series on Wolfenstein 3D and DOOM.

• libRealSpace — Tools to parse and render Origin Systems RealSpace engine assets.

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Co-founder and CTO of Honeycomb; previously an infrastructure engineer at Parse, Facebook and Linden Lab, and co-author of Observability Engineering.

• How We Migrated the Parse API From Ruby to Golang (Resurrected)

  I wrote a lot of blog posts over my time at Parse, but they all evaporated after Facebook killed the product. Most of them I didn’t care about, but I was mad about losing one of them: a retrospective of the grueling, mu…

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Member of technical staff at Anthropic. He has led ML/AI teams at Amazon, Alibaba and Lazada, and writes about LLMs, recommender systems and engineering at eugeneyan.com.

• To better understand MCPs and agentic workflows, I built news-agents to generate a daily news recap. The main agent spawns sub-agents, assigning them news feeds to parse and summarize, and then generates a final overall summary plus analysis.

  eugeneyan.com

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Pseudonymous essayist. Writes at gwern.net on AI scaling, statistics, genetics and long-running internet research, with heavy citation and a habit of revising old essays in place rather than leaving them wrong.

• archive-text-urls — Parse freeform text files looking for plausible URLs to archive (abandoned)

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