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Undefined Behavior in C and C++ (2024)
In some ways, that's because C is a lower-level language, closer to assembly; it just gives you what the underlying machine gives you.
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The latest blog posts to take off on Hacker News. 3,707 posts.
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Why tail-recursive functions are loops
One story every computing enthusiast should hear is the lesson ofhow loops and tail-recursion are equivalent. We like recursivefunctions because they’re amen...
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Zig Error Patterns
Although I try to make good use of the debugger, I am quite used to print-based debugging, especially for unit tests. I wanted to explore some tricks to improve print-based debugging, and also incorporate the debugger more.
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My Ideal Array Language
The fundamental units of computation available to users today are not the same as they were 20 years ago. When users had at most a few cores on a single CPU, it made complete sense that every program was written with the assumption that it would only run on a single core.
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Typed languages are better suited for vibecoding
My >10 year old programming habits have changed since Claude Code launched. Python is less likely to be my go-to language for new projects anymore. I am managing projects in languages I am not fluent in—TypeScript, Rust…
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C++26 Reflections adventures and compile-time UML
The first thing I do every time I need to learn a new codebase is to start drawing the UML diagram of its classes, and usually give up soon after I started. The process of doing it manually is certainly useful, but now with reflections I figure it would be fun to try to generate it instead.
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The /o in Ruby regex stands for "oh the humanity "
Your code using the /o modifier Source: wikipedia Hi there! Do you like Regex? Do you like performance? Do you like creating confounding bugs for yourself rooted in the mechanics of the Ruby VM itself? If you said yes to all of the above, have I got a feature for you! But first, let’s start with a story. The cliffs of…
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Resizable structs in Zig
In this post I will make the case for the concept of a “runtime resizable struct” in Zig. I will then design an API by exploiting Zig’s powerful comptime functionality.
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Use Your Type System
Today I'm discussing a trivially simple technique that I've rarely seen used in production codebases. In programming, we often need to deal with simple values that can be represented by simple, generic types built into our programming language or provided by libraries: types like integer, string, or UUID. In any
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Why I write recursive descent parsers, despite their issues (2020)
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…
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Why Elixir? Common misconceptions
Why Elixir is not just a good platform for modern development, but a great one - addressing common misconceptions
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The borrowchecker is what I like the least about Rust
Rust's borrowchecker comes with real downsides
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Zig's New Writer
Karl Seguin's Blog - A mix of coding and creative writing
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A Rust shaped hole
Without writing a single line of Rust, why I feel it might be right
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Writing a competitive BZip2 encoder in Ada from scratch in a few days (2024)
Spoiler : it is also likely already the best BZip2 encoder for a given block size. See the green charts below. Note for subscribers: if you...
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Hacking Coroutines into C
A while ago, I was part of a team developing embedded software. The software was deeply rooted in state machines - dozens of them—spread across multiple functions. While this architecture is common in embedded development, especially for systems without an operating system, I started to question: Is this really the…
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Working through 'Writing A C Compiler'
Some time ago I decided I wanted to create a c compiler for the Hack processor in the nand2tetris book. After several dead end attempts that I might describe later I found this book : Writing a C C…
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Phrase origin: Why do we "call" functions?
On StackExchange, someone asks why programmers talk about “calling” a function. Several possible allusions spring to mind: Calling a function is like calling on a friend — we go, we stay a while, we come back. Calling a function is like calling for a servant — a summoning to perform a task. Calling a function is like…
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Building the Rust Compiler with GCC
If you know one thing about me, it is that I love working on the Rust compiler. Some people kayak, travel or play guitar - and I stare at assembly, trying to figure out what I broke.
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Exploring Coroutines in PHP
Coroutines are functions that pause and resume with state, allowing flexible, bidirectional control flow in PHP.
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# [derive(Clone)] Is Broken
Not just `#[derive(Clone)]`, but all of the standard trait derives are
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Features of D That I Love
This is a beginner-friendly post exploring some of my favourite parts of the D programming language , ranging from smaller quality of life stuff, to more major features.
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I write type-safe generic data structures in C
See my follow-up article: “A Fast, Growable Array With Stable Pointers in C” I write type safe generic data structures in C using a technique that I haven’t seen elsewhere1. It uses unions to associate type information with a generic data structure, but we’ll get to that. My approach works for any type of data…
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The provenance memory model for C
[The wordpress markdown inclusion does a very bad job, it seems, there have been some idiotic formatting errors. I hope that these are fixed, now.] A years-long effort led by Kayvan Memarian and Pe…
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Error handling in Rust
A blog, mostly about programming
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Solving `Passport Application` with Haskell
Using logic programming to beat the game