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Recreational Programming
Learn more about Christopher Phiri work experience, education, connections & more. Software developer, UX/UI, Illustrator
Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 1,413 posts.
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Apple rejected my dictation app for using the accessibility API
Apple rejected WhisperPad under Guideline 2.4.5 for using the accessibility API to paste transcribed text. After an appeal that ended in another rejection, I split it into two versions — a compliant one on the App Store, and the original auto-paste version, direct.
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Bringing uv and ty together
Experimental uv-ty integration enables first-class support for Python scripts on the CLI and in the editor, and a unified uv check command.
394
I’m leaving Redis for SolidQueue
Rails 8 eliminates Redis from the default stack. Learn how SolidQueue, SolidCache, and SolidCable replace Redis for job processing, caching, and real-time updates—powered entirely by PostgreSQL. Explore the true cost of Redis, how SolidQueue works, when it scales, and how to migrate from Sidekiq to a simpler…
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Android CLI: Build Android apps 3x faster using any agent
News and insights on the Android platform, developer tools, and events.
396
How I use HTMX with Go
My new book guides you through the start-to-finish build of a real world web application in Go — covering topics like how to structure your code, manage dependencies, create dynamic database-driven pages, and how to authenticate and authorize users securely .
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I Stored a Website in a Favicon
Words from me as developer, student and human.
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Nobody cracks open a programming book anymore
A sad look at the state of modern programming books.
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GitHub Copilot code review will start consuming GitHub Actions minutes
Developers and engineering teams worldwide use GitHub Copilot for high-quality, agent-powered code reviews on every pull request. We understand that any change is significant to our customers, especially when it…
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What even is an OS now?
Computers now work the way I thought they did when I was 8. What does computing look like when most applications have an audience of 1-2 people? I'm leaving Fly.io to build a phone for that world.
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Microgpt explained interactively
Walk through Karpathy's 200-line GPT from scratch. Tokenize names into integers, watch softmax convert scores to probabilities, step through backpropagation on a computation graph, explore attention heatmaps, and see a tiny model learn to generate plausible names.
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No management needed: anti-patterns in early-stage engineering teams
Sharing a reluctant, "node & postgres" approach to engineering management for early-stage startups
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Correlated randomness in Slay the Spire 2
Here are three true statements about the game of Slay the Spire 2 (in single player): If you pick Neow's Bones in the Underdocks, the random curse is ~54% likely to be Debt.* It is impossible to receive Rebound from the Trash Heap event. Your first fight is 76% likely to drop a potion in Underdocks, and 4% likely to…
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In praise of –dry-run
For the last few months, I have been developing a new reporting application. Early on, I decided to add a –dry-run option to the run command. This turned out to be quite useful – I have…
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Making Wolfram tech available as a foundation tool for LLM systems
Wolfram's Foundation Tool supplements LLM foundation models with deep computation and precise knowledge. CAG (computation-augmented generation) underlies multiple access methods.
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But yak shaving is fun (2019)
KO | EN | Discussions on HN Alexandr frolov (CC BY-SA 4.0) This blog doesn’t use a static site generator or framework like Jekyll, Hugo, or Gatsby. I tried a few of them at first, but they gave me too little freedom to customize, so I decided to build the blog myself. Early on I just wrote posts in ...
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The Smallest Brain You Can Build: A Perceptron in Python
A perceptron explained from scratch in Python, with interactive demos. Learn weights, bias, the decision boundary, epochs, learning rate, and why we normalize data.
408
GCC 16 has been released
This page is a "brief" summary of some of the huge number of improvements in GCC 16. You may also want to check out our Porting to GCC 16 page and the full GCC documentation .
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Building a TUI is easy now
How we built and shipped a terminal UI for Hatchet in 2 days using Claude Code, the Charm stack (Bubble Tea, Lip Gloss), and a tight feedback loop.
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Jira Is Turing-Complete
Engineering folklore holds that Jira (Atlassian's project-tracking tool) is Turing-complete . Existing claims point vaguely at automation features without exhibiting a reduction. This article supplies a proof, with setup instructions and execution trace.
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RISC-V is now officially supported by CPython
I’m happy to announce that RISC-V platforms are now officially supported by CPython. 🎉 🚀
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Nitpicking the shell history scene in 'Tron: Legacy'
In the 2010 film Tron: Legacy , there's a scene where the main character Sam Flynn sits down at a computer in his father’s study, and types some commands to try to figure out what Flynn senior had last been working on, before mysteriously disappearing.
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From Supabase to Clerk to Better Auth
The perils of logging in
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Components of a Coding Agent
How coding agents use tools, memory, and repo context to make LLMs work better in practice
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TurboQuant: A first-principles walkthrough
Each mini-demo below covers one concept used later. Skip the ones you already know.
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The Slow Formation of Durable Software
How a group of historians took years to imagine Zotero, the research application that would eventually be used by millions
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This game is a single 13 KiB file that runs on Windows, Linux and in the Browser
Not that long ago I became aware of Justine Tunney's cosmopolitan libc project. It's a toolkit that allows you to compile C source code into a single binary...
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Omarchy development practices lead to predictable security issues
First, a PSA: Do NOT use Omarchy if you care about security of your machine even a little bit. You can't polish a turd Omarchy 4.0 shipped with a collec...