Every blog post that took off on Hacker News, ranked by the votes of its best submission. 3,707 posts.
My six-year-old son walked up to me yesterday. “What are you reading?” At the time, I was reading part of Janis Voigtländer’s habilitation thesis. Unsure where to even start, I decided to just ans…
In order to increase fluency in a programming language, one has to read a lot of it. But how can you read a lot of it if you don’t know what it means? In this article, instead of focusing on one or...
This is a draft I wrote in early 2015 and never got around to publishing. Here’s the mostly unpolished version because it wasn’t doing anybody any good sitting in my drafts folder. The simplest change was updating year 2015 to 2016 at publication time.
Reviewing the JIT in Python 3.13
Explains how the Japanese writing system works by comparing it to expanding the English alphabet.
In order to increase fluency in a programming language, one has to read a lot of it. But how can you read a lot of it if you don’t know what it means? In this article, instead of focusing on one or...
PHP isn't the same old crappy language it was ten years ago
tl;dr I’m burying the lede with context and catch-up material first, so impatient or already-clued-in readers should skip to below the videos for today’s big news. Or just read Luke Wagner ‘s blog post right now.
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
Exploring the brilliant design of UTF-8 encoding system that represents millions of characters while being backward compatible with ASCII
When Jarred joined the Zig community about 5 years ago, I described him as someone who had strong "beginner energy". That is, he moved fast and tried a lot of different stuff, jumping head first into problems that he was not yet equipped to solve, leading to mediocre outcomes in terms of engineering, but learning a…
During my final term at UWaterloo I took the CS444 compilers class with a project to write a compiler from a substantial subset of Java to x86, in teams of up to three people with a language of the group’s choice. This was a rare opportunity to compare implementations of large programs that all did the same thing…
It took three years and 200,000 words more than I expected, but my second book, Crafting Interpreters , is complete. I finished the third draft of the last chapter today, marking the last of around 1,400 days of continuous writing.
(This article has been translated into Spanish (PDF, with some additions) by Jorge Amado Soria Ramirez — thanks!) Preface I’m cranky. I complain about a lot of things. There’s a lot in the world of technology I don’t like, and that’s really to be expected—programming is a hilariously young discipline, and none of us
In the two years since I’ve posted I want off Mr Golang’s Wild Ride, it’s made the rounds time and time again, on Reddit, on Lobste.rs, on HackerNews, and elsewhere. And every time, it elicits the ...
In November of 2024 I wrote a blog post titled "Is Python Really That Slow?", in which I tested several versions of Python and noted the steady progress the language has been making in terms of…
I’ve spent the last year building keyboards , which has included writing firmware for a variety custom circuit boards.
There were several moments over the last few weeks when I heard people discuss differences between Python lists and dicts and one of the first ones mentioned was that lists are ordered and dicts are not.
Why I can't use Elm, and can't recommend it to others.
I have built a toy Java Virtual Machine in Rust, complete with garbage collection, exception handling, and the ability to run real Java bytecode using OpenJDK's rt.jar.
My honeymoon with the Go language is extremely over. This article is going to have a different tone from what I’ve been posting the past year - it’s a proper rant. And I always feel bad writing tho...
Yet another programming blog. Thoughts on software and related misadventures.
For many years I used the Julia programming language for transforming, cleaning, analyzing, and visualizing data, doing statistics, and performing simulations.
A compiler is just a program that translates other programs. Traditional compilers translate source code into executable machine code that your computer understands. (Some compilers translate source code into another programming language. These compilers are called source-to-source translators or transpilers.) LLVM is…
“signed char lotte” is a computer program written by Brian Westley and the winner of the “Best Layout” award in the 1990 International Obfuscated C Code Contest. The cleverness of the text is staggering. Superficially it reads as an epistolary exchange between two (possibly former) lovers, Charlotte and Charlie. At…
Take the following code: a = 1 a = a + 1 print(a) A common FP critique of imperative programming goes like this: “How can a = a + 1? That’s like saying 1 = 2. Mutable assignment makes no sense.” This is a notation mismatch: “equals” should mean “equality”, when it really means “assign”. I agree with this criticism and…
Hacker News was written in the Arc lisp dialect, a dialect created by Paul Graham. Arc was implemented on top of Racket, but that has now changed. HN runs on top of SBCL since (at least) September of 2024.But why? For performance reasons. I recently noticed that Hacker News no longer uses paging for long threads. In…
