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John MacFarlane
GitHub
commonmark-hs — Pure Haskell commonmark parsing library, designed to be flexible and extensible
extensible duplicate parsing
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20 September
American open-source program lead working on WordPress; a WordPress core contributor and release lead who writes at jeffpaul.com.
18 September
Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.
Faster JSON parsing with SVE2 on ARM processors ARM processors, like those in your phone, have instructions capable of processing several elements at once (SIMD). These instructions are called NEON. But many newer processors have a different SIMD extension called SVE…
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Indonesian software engineer, educator and engineering manager at Zero One Group; open-source enthusiast writing at ripandis.com.
15 September
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 (!!!). JavaScript Related
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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14 September
Engineer at Vercel Labs as of 2026. Ships a steady stream of small developer tools — agent-browser, portless, json-render, native-sdk, the v0 SDK — and lists every one of them at ctate.dev.
emulate v0.11.2 is out Updates across six emulators: GitHub, Google, Resend, AWS S3, Slack, Microsoft GitHub → Raw Contents and README responses → Seed org members and admins → Checks handle branch and tag names with slashes → Org installation writes authenticate as the App bot Google → Calendar v3 discovery endpoint → RS256-signed ID tokens and JWKS for OIDC verification Resend → Idempotency keys for individual and batch sends, so retries don't create duplicate emails or webhooks AWS S3 → Preserve binary payloads on upload, copy, and download Slack → Truncate messages at 40,000 characters, w… Google Related
3 September
Creator of Claude Code at Anthropic.
Your input needed: would you use this? This is an early look at how we're thinking about making Claude Code way more extensible. It's a little crazy, and very exciting. More details here: github.com
Quoting @ClaudeDevs We're exploring a new way to let you extend and customize Claude Code: Function Hooks. Here's a couple videos showing what you'd be able to do. It hasn't shipped yet, we'd love feedback on this on our GitHub issue. Anthropic Related
22 August
Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.
19 August
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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30 July
Software architect and futurist; founded ClariNet, chaired the EFF, and has written about robocars for two decades.
27 February
Software engineer and a long-time technical lead of the Go programming language; author of plan9port and of the research.swtch.com essays.
19 January
Software engineer and a long-time technical lead of the Go programming language; author of plan9port and of the research.swtch.com essays.
Their words
Given the simplicity and speed of the algorithms in this post and the increasingly small deltas between successive algorithms, perhaps we are nearing an optimal solution.
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research.swtch.com
8 October 2025
Italian software architect working on Microsoft 365, Azure and GitHub tooling. Microsoft MVP and GitHub Star; writes, speaks and streams about developer productivity at emanuelebartolesi.com.
Their words
My primary code editor. Extensible, fast, and has excellent TypeScript support. The integrated terminal and Git features are fantastic.
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emanuelebartolesi.com
6 April 2025
Founder of the toy manufacturer Viahart; writes about manufacturing, importing and why bringing production back to America is harder than it sounds.
Their words
Even with infinite money, we cannot duplicate that, because we lack the knowhow.
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molsonhart.com
12 March 2025
Writer and consultant on formal methods and software correctness; author of Practical TLA+ and Logic for Programmers.
30 April 2024
Programmer and author of Modern C++ Design and The D Programming Language; a lead contributor to the D language.
All I'm trying is to duplicate a slide. The year is 2024. Related
28 May 2022
Indonesian software engineer, educator and engineering manager at Zero One Group; open-source enthusiast writing at ripandis.com.
Their words
Personal knowledge base and note-taking tool. Highly customizable and extensible.
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ripandis.com
8 February 2017
Working on @ampcode. Writing registerspill.thorstenball.com. Once authored interpreterbook.com and compilerbook.com.
8 July 2013
Danish Mac developer; author of the TextMate text editor and founder of MacroMates.
13 August 2011
Software developer; created Firebug, helped create Firefox on the Netscape browser team, and built the original Facebook iPhone app.
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What is a korrent?
A korrent is a belief a person has stated in their own words: one
sentence stating the claim, backed by a quote and a source, kept at
korrents.com .
Under a name here, the quoted block is what they actually said.
The korrent beneath it is the claim those words support, in
korrents' wording — tap it to see the record, its source, and who
else holds it.
Nobody here wrote their own korrents. They are compiled from public
statements, and a person can change their mind, which is recorded too.
Got it
About the English under a post
Some people here publish in a language other than English. Where they
do, this site shows a machine translation beneath the post, in
this typeface — the site's own, not theirs.
The post itself is never changed, moved or hidden: what is set in the
serif above is exactly what the person published, and it is what to
quote them on. A translation can be wrong in ways that matter,
especially about tone.
Only the post's own words are translated. A quoted post, a linked
article and a belief on korrents.com
are left in their original language.
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