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Carlos Alexandro Becker
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env — A simple, zero-dependencies library to parse environment variables into structs
dependencies parse variables
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17 September
Statistician and software engineer who writes R packages for reproducible research and publishing, including knitr, bookdown and blogdown.
15 September
Creator of Homebrew, the macOS package manager, and a Swift developer.
Products for devs are quite dead. SaaS for devs is dead. There are exceptions, though I think you have to extrapolate on variables that are not raw software. I have ideas and am implementing them. Mostly in private because building in public also can no longer be capitalized upon. Seemingly. Quoting @alex_holovach my WHOOP subscription expired so i had codex reverse engineer it and build my own app - telemetry goes to my prometheus server - grafana and the app visualize it - hermes monitors metrics and plans workouts next wanna build my own Zwift and Strava the era of personal software is here SaaS Related
14 September
Web developer; former head of engineering at Flickr, author of Building Scalable Web Sites, and co-founder and CTO of Slack.
13 September
AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).
Reasoning from scratch round 3: This time, I cover generating a verifier for... a) ...evaluation (base model versus any future model improvement) b) ...the reinforcement learning with verifiable rewards (RLVR) training later on 00:00 Introduction 01:21 Four approaches to LLM evaluation 07:20 Verifiers and reinforcement learning with verifiable rewards 10:52 Notebook setup and dependencies 13:43 Section 3.1 Building a math verifier 18:57 Section 3.2 Loading a pre-trained model to generate text 24:34 Generating and displaying model answers 29:23 Section 3.3 Implementing a wrapper for easier tex… LLMs Related
11 September
British front-end web developer based in Japan; writes about HTML, CSS, web performance and browser tooling at christianoliff.com.
4 September
Author of Shape Up; formerly head of strategy at Basecamp, where he worked on product design for seventeen years; now runs Felt Presence.
A friend turned me on to asking Fable to wireframe different options when I have a tricky UI problem with a lot of requirements and too many possible paths. Game changing. Gives me flashbacks to what @bmoesta taught me about using orthogonal arrays when an engineering problem has too many variables. It's not about one-shotting the answer. It's about getting enough contrast between options to clarify which variables (aka "factors") are most important. Not which solution is best -- which variables matter more. THEN I can use that knowledge to decide to fix certain variables and narrow the space… Related
3 September
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.
Founded PSPDFKit in 2011 and ran it for a decade. Came back from a break to work on AI agents — the OpenClaw project, and OpenAI, joined in February 2026. Writes at steipete.me.
Their words
Been using Astra for the last few weeks and it’s so good and proactive. There’s a bunch of PRs on vitest, tsx or SwiftPM where Astra debugged OC and ended up finding and patching issues in upstream dependencies.
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2 September
Usability pioneer; co-founder of Nielsen Norman Group and founder of UX Tigers; author of the ten usability heuristics and of Jakob's Law.
1 September
Web developer; former head of engineering at Flickr, author of Building Scalable Web Sites, and co-founder and CTO of Slack.
28 August
Founder of Platformer, a newsletter on tech platforms and the people they affect, and co-host of the Hard Fork podcast at the New York Times.
20 August
Interactive fiction author and hacker; wrote Spider and Web and Hadean Lands, and designed the Glulx virtual machine.
Bluesky I've updated all the Visible Zorker pages to include a search field. You can search for objects, routines, variables, and game text. blog.zarfhome.com/2026/08/visi... Yes, the word “Zork" is temporarily swamped in gaming news due to some FromSoftware article. Big deal. Related
Mastodon I've updated all the Visible Zorker pages to include a search field. You can search for objects, routines, variables, and game text. https://blog.zarfhome.com/2026/08/visible-zorker-search Yes, the word “Zork" is temporarily swamped in gaming news due to some FromSoftware article. Big deal. #Zork #InteractiveFiction Related
Demographer; writes on fertility, marriage and population, and directs the Pro-Family Initiative at the Institute for Family Studies.
From one piece
We Actually Know A Lot About Fertility Decline
2 beliefs, in the piece's order there
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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12 August
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.
10 August
Founded PSPDFKit in 2011 and ran it for a decade. Came back from a break to work on AI agents — the OpenClaw project, and OpenAI, joined in February 2026. Writes at steipete.me.
1 May
Brazilian-American staff software engineer working on platforms, AI and developer productivity. Writes about engineering and his setup at ivansantos.me.
20 February
Cryptography engineer; maintains Go's cryptography libraries as a full-time open-source maintainer, funded directly by companies that use them.
12 February
Founding member of OpenAI and former director of AI at Tesla; creator of nanoGPT and the term "vibe coding".
28 November 2025
Astrophysicist and coffee researcher; author of The Physics of Filter Coffee and The Physics of Espresso, and writer of the Coffee ad Astra blog on brewing science and equipment.
From one piece
The Importance of Bed Depth
2 beliefs, in the piece's order there
13 October 2025
Freelance research analyst and writer of the blog Aceso Under Glass, known for 'epistemic spot checks' of non-fiction claims.
8 August 2025
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.
24 July 2025
Co-founder and CTO of Honeycomb; previously an infrastructure engineer at Parse, Facebook and Linden Lab, and co-author of Observability Engineering.
10 June 2025
Writes jvns.ca, turning "hard and scary" topics — networking, debugging, Linux internals — into plain explanations and hand-drawn comics. Publishes Wizard Zines, illustrated programming zines. Software developer based in Montreal.
7 May 2025
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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22 March 2025
Programmer and streamer; was an engineer at Netflix, now teaches and argues about editors, Vim and how people learn to program.
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I highly recommend starting from scratch if you want to understand a concept. You don't know how an HTTP server works, create a TCP socket, learn how to parse HTTP.
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28 January 2025
Deep-learning researcher and Turing Award laureate; founder of the Mila institute.
8 July 2024
Cryptography engineer; maintains Go's cryptography libraries as a full-time open-source maintainer, funded directly by companies that use them.
open source
Their words
I started with a rather non-consensus hypothesis: companies want to pay for their critical open source dependencies, but most projects are not selling them a legible way to do so.
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words.filippo.io
7 September 2023
Software engineer at PlanetScale and creator of the vim-go plugin. Writes at arslan.io about Go, tooling, industrial design and books.
1 September 2023
Designer, architect and scientist, who led the Mediated Matter group at MIT and founded OXMAN, a company that builds products in collaboration with living organisms.
Their words
These incredible life forms are communicating using a different language than ours. We use language models, they use molecular models. At the moment where we can parse, we can decode these molecular moments is when we can start having a conversation with plants.
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youtube.com
17 July 2023
Professor of Cognitive and Computational Neuroscience at the University of Sussex, co-director of the Sussex Centre for Consciousness Science, and author of Being You: A New Science of Consciousness.
26 August 2022
Ancient and military historian; writes A Collection of Unmitigated Pedantry, long series checking what history actually says against how popular culture tells it.
19 August 2022
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
19 July 2022
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
17 May 2022
Working on @ampcode. Writing registerspill.thorstenball.com. Once authored interpreterbook.com and compilerbook.com.
1 October 2020
Programmer known online as technomancy; author of Leiningen, the Clojure build tool, and a maintainer of the Fennel programming language.
27 August 2015
Interpretability researcher at Anthropic, which he co-founded; before that at OpenAI and Google Brain, where he wrote the explanations of neural networks most people learned them from.
5 January 2014
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.
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