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Postcard is now open source
Self-host a personal website + newsletter
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 550 posts.
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Intro to BirdNET-Pi: Eavesdropping on my feathered friends
Stick microphone out window, catch chorps, feel joy.
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Top Secret: Automatically filter sensitive information
Automatically filter sensitive information before sending it to external services or APIs, such as chatbots and LLMs.
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The WinRAR approach
The WinRAR Approach: a small change in how I distribute content to keep the content free, sustainable, & ad-free.
485
I hacked my clock to control my focus
I often get distracted. I obviously don’t like it. So I decided to turn my computer’s clock into a constant reminder to help me focus. Implementation This hack requires: Ubuntu with GNOME desktop environment The Panel Date Format extension A simple bash script 1. Install the Panel Date Format extension # If you don't…
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Making PyPI's test suite faster
See how we slashed PyPI’s test suite runtime from 163 to 30 seconds. The techniques we share can help you dramatically improve your own project’s testing performance without sacrificing coverage.
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Typst's Math Mode Problem
Typst's math mode has a strange precedence problem that most people using it will run into at some point.
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The Sky's the limit: AI automation on Mac
I’ve been sitting on this draft for a few days now, partly because I thought it would turn down the bitterness, and partly because I kept asking myself ...
489
Ergonomic keyboarding with the Svalboard: a half-year retrospective
E ven before I started pressing buttons for a living I was always a pretty heavy computer user. When I was about 18 I started experiencing symptoms of RSI. At around the same time I learnt of the Dvorak keyboard layout, and so I switched, hoping it would solve my problems. It did, at least at the time, and so for the…
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Reverse engineering my #1 Hacker News article
About a week ago, I shared a small blog article on Hacker News.
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Learn, Reflect, Apply, Prepare: The Four Daily Practices That Changed How I Live
The Four Daily Practices That Changed How I Live and Work
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Emacs Tree-sitter custom highlighting
A few years ago I blogged about custom tree-sitter-based syntax highlighting in emacs . I started out with highlighting certain keywords in...
493
Introduction to Software Development Tooling (2024)
Learn the command line, version control, build systems, and correctness in NEU’s CS 4973: ISDT.
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Take Two: Eshell
This is a contribution to the Emacs Carnival 2025-06: Take Two collection of posts on Christian Tietze’s blog. My first take with Eshell many years back did not leave a good impression. My...
495
Hiding messages in a deck playing cards
I was recently thinking about the huge number of ways you can shuffle a deck of 52 cards and wondered if it would be possible to store arbitrary data.
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OSMAnd vs. Organic Maps
There's a new offline mapping program for smartphones, so I thought I'd see how it stacks up against the one I'm already using.
497
Turning a Decommissioned iPhone into a UniFi Protect Camera
Why buy a bespoke camera when you can do something much harder instead?
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I turned a 40 year old Apple Mouse into a speech to text button
A place to play around with technology and make it easy and fun
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Evaluating LLMs for my personal use case
My life is not a math Olympiad
500
ImapGoose
ImapGoose is a small program to keep local mailboxes in sync with an IMAP server. The wording “keep […] in sync” implies that it does so continuously, rather than a one-time sync. ImapGoose is designed as a daemon, monitoring both the IMAP server and the local filesystem, and immediately synchronising changes. When…
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How Cursor (AI IDE) Works
Turning LLMs into coding experts and how to take advantage of them.
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A three month review of kagi search and the orion web browser (2024)
There's a new web search in town! I spent the start of 2024 kicking the tires on Kagi's paid search and their Orion web browser.
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Printf debugging is ok
A balanced take on the printf vs debugger debate: why there is no single right answer, and how to choose the right debugging approach for the situation at hand.
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Performance hacks for faster Python code
Learn practical optimization hacks, from data structures to built-in modules, that boost speed, reduce overhead, and keep your Python code clean.
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Emacs Solo: A Surprise System Crafters Live Demo
Rahul's Blog
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A critique of package managers
n.b. This is a written version of a dialogue from a YouTube video: 2 Language Creators vs 2 Idiots | The StandupPackage managers (for programming languages) are evil.11 The term “evil” is being used partially hyperbolic to make a point.To start, I need to make a few distinctions between concepts a lot of programmers…
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What I Self Host
I’ve always liked reading blogs, and have used several feed readers in the past (Feedly, for example). For a long time I was thinking it would be fun to writ...
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How to run an Arduino for years on a battery (2021)
Build an autonomous Arduino system optimized for ultra-low power consumption. How to Run an Arduino for Years on a Battery Build an autonomous Arduino.