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Any program can be a GitHub Actions shell
In GitHub Actions, you can use the shell keyword to specify the shell that runs a given run: block. This keyword is optional for workflows but mandatory for action definitions.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 14,540 posts.
3122
Git Diagramming "The Weave"
We all know the current US President is one hell of an orator and often assures us that he has “the best words”:
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How Python asyncio works: recreating it from scratch
Learn how asyncio works by recreating it from scratch with Python generators and using the __await__ dunder method for the async/await keywords.
3124
The Polygons of Another World: Super Nintendo
This article is part of a study about the ports of Another World. It is highly recommended to read Another World 101 before reading this.
3125
Learn by reading code: Python standard library design decisions explained
On your Python learning journey, you may have heard that a great way to get better is to read code written by other people. That's true, but finding good code to study is not easy, mostly because the design philosophy and the reasoning behind the code are rarely documented. The Python standard library is special in…
3126
Visualizing Concurrency in Go (2016)
If you prefer video over blog posts, here is my talk on this at GopherCon 2016: https://www.youtube.com/watch?v=KyuFeiG3Y60
3127
How to Build Your Own Blockchain Part 3 – Writing Nodes That Mine and Talk
Jack Schultz's blog.
3128
Breaking homegrown crypto
Anubis could not load its JavaScript. The server may be overloaded. Please reload the page to try again.
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Fortunately, I don't squash my commits
The story of a bug, and how I addressed it.
3130
Maybe You Don't Need Kubernetes (2019)
Kubernetes is the 800-pound gorilla of container orchestration. It powers some of the biggest deployments worldwide, but it comes with a price tag...
3131
Moving Away from UUIDs (2018)
If you need an unguessable random string (for a session cookie or access token, for example), it can be tempting to reach for a random UUID, which looks like this: 88cf3e49-e28e-4c0e-b95f-6a68a785a…
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How I'm Productive with Claude Code
It’s been about 6 weeks since I joined Tano, and this is what my commit history looks like:
3134
Programming Zero Knowledge Proofs: From Zero to Hero
Learn to write and modify Zero Knowledge Proofs from scratch. You'll build a digital signature scheme using hash-based commitments, gaining practical ZKP programming skills and intuition along the way. By the end, you'll have all the tools you need to implement things like group signatures.
3135
Rules of optimization
Rules of optimization: 1) Design for performance from day 1 2) Profile often 3) Be vigilant on performance regressions 4) Understand the data 5) Understand the HW 6) Help the compiler 7) Verify your assumptions Performance is everyone's responsibility https://t.co/CwwJffnHGz
3136
Every Byte Matters
I have spent a large portion of my career working in Java. In that time, you get used to huge classes. New functionality? Just add a new method and field to the class. The cost of each new field is rarely considered. Performance is often considered from a classic computer science perspective by considering asymptotic…
3137
Why you can have millions of goroutines but only thousands of Java threads
Many seasoned engineers working in JVM based languages have seen errors like this: [error] (run-main-0) java.lang.OutOfMemoryError: unable to create native thread: [error] java.lang.OutOfMemoryError: unable to create native thread: [error] at java.base/java.lang.Thread.start0(Native Method) [error] at…
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Postgres is eating the database world
PostgreSQL isn’t just a simple relational database; it’s a data management framework with the potential to engulf the entire database…
3140
Io_uring is not an event system
I’ve been hearing about io_uring on and off for the last couple of years. Its a relatively new technology in Linux to allow high-performance IO with very few overheads. Whenever its been mentioned, its usually been presented as a new alternative to select, poll and epoll. This led me to believe that it was just the…
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GitHub has not removed malicious imitation software after 3 weeks
On the 31st August I got an email from a customer, telling me that they had found an imitation of my data wrangling software on Github. I’m not linking to it, but here is a screenshot: It is …
3144
Google to Reimplement Curl in Libcrurl
Not the entire thing, just "a subset". It's not stated very clearly exactly what that subset is but the easy interface is mentioned in the Chrome bug about this project. What? The Chromium bug states that they will create a library of their own (named libcrurl) that will offer (parts of) the libcurl API and … Continue…
3145
The Anatomy of a macOS App
How Mac applications evolved from a multitude of resources to a bundle formed from a standard layout of directories, and how they have come to be largely self-contained in macOS 26.
3146
CSS Modules
If you wanted to identify an inflection point in the recent development of CSS thinking, you’d probably pick Christopher Chedeau’s “CSS in JS” talk from NationJS in November, 2014. It was a watershed moment that set a bunch of different minds spiralling off in their own directions like particles after a high-energy…
3147
Firefox's Optimized Zip Format
This post is about minimizing amount of disk IO and CPU overhead when reading Zip files. I recently saw an article about a new format that was faster than zip. This is quite surprising as to my mind, zip is one of the most flexible and low-overhead formats I’ve encountered. Some googling showed me that over past 11…
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The Polygons of Another World: Atari Jaguar
This article is part of a study about the ports of Another World. It is highly recommended to read Another World 101 before reading this.
3150
Sed – An Introduction and Tutorial
The Grymoire - Tutorial on the SED stream editor.