Best of 2025

The blog posts Hacker News loved most in 2025. 283 posts.

Programming Languages
97

Easy Forth (2015)

This small ebook is here to teach you a programming language called Forth. Forth is a language unlike most others. It’s not functional or object oriented, it doesn’t have type-checking, and it basically has zero syntax. It was written in the 70s, but is still used today for certain applications .

98

What about K?

k is a family of concise, fast vector-oriented languages designed by Arthur Whitney . Calling k a “family” is deliberate; there is no single definitive k, but instead a sequence of slightly incompatible versions. If you decide to stick with k, you’ll see mentions of k4 , k5 etc. Exactly what those numbers mean aren’t…

108

The Simplicity of Prolog

Nowadays the most popular programming languages are Python, Javascript, Java, C++, C#, Kotlin and Ruby, and the average programmer is probably familiar with one or more of these languages. It's relatively easy to switch from one to another (barring any framework specific knowledge that may be needed), since they are…

117

Weird Expressions in Rust

Rust has a very powerful type system, but as a result it has some quirks, some would say cursed expressions. There’s a test file, weird-expr.rs , in the rust repository that tests for some of these and makes sure there consistent between updates. So I wanted to go over each of these and explain how it’s valid rust.