Best of 2022

The blog posts Hacker News loved most in 2022. 3,821 posts.

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1713

Geometry from Another Universe

You start on an enclosed lawn, surrounded by four walls with a doorway in one of them. If you go in and explore, you might begin to feel trapped. You'll find you can visit five different rooms in the house, or go back outside to the lawn, but there's no way to go anywhere else. It's not because there are walls…

1719

Who's Attacking My Server?

One of the unexpected 1 outcomes of the Russian invasion in Ukraine is a large increase in nefarious access attempts to servers under my control, not necessarily appearing to arise from Russian IP addresses. There are the usual attempts at brute-forcing SSH access, for instance, but also a flurry of malevolent HTTP(S)…

1721

Using unwrap() in Rust is okay

One day before Rust 1.0 was released, I published a blog post covering the fundamentals of error handling . A particularly important but small section buried in the middle of the article is named “ unwrapping isn’t evil ”. That section briefly described that, broadly speaking, using unwrap() is okay if it’s in…

1727

Koch method to learn Morse

The Koch method is based on exposing the student to full-speed Morse from day one. The first lesson starts with just two characters, played in full speed. The student must "copy" them (i.e. writing them down or typing them, like in this page). Once 90% of the characters are correctly "copied", the student can go move…

1739

Happy 10th Birthday, Sidekiq

It’s hard for me to believe these words but I pushed Sidekiq’s first commit on Jan 16th, 2012. Ten years ago. The public announcement. One month later. One quarter later. Some context for those new to this blog: Sidekiq is the most popular background job system for the Ruby programming language. Every application has…