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Building a Virtual Machine Inside ChatGPT
Unless you have been living under a rock, you have heard of this new ChatGPT assistant made by OpenAI. Did you know, that you can run a whole virtual machine inside of ChatGPT?
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The latest blog posts to take off on Hacker News. 14,540 posts.
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Adventures in Advent of Code
I’ve been participating regularly in Advent of Code for the past couple of years. It’s one of the highlights of my holiday season. The puzzles are fun, the stories are appropriately ridiculous, and it’s a neat way for me to keep the cobwebs brushed off some of the things I learned years ago that I don’t regularly use…
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AI solves Advent of Code 2022
I will try to solve all of the advent of code with as little human input as possible
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Drag and Drop from Terminal
I have built up a pretty good workflow in the terminal. The main thing that I was missing until now was an easy way to drag and drop the files that I am looking at in a terminal to other apps.
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How to JIT – An Introduction
When I wrote the introductory article for libjit , I aimed it at programmers who know what JITs are, at least to some extent. I did mention what a JIT is, but only very briefly. The purpose of this article is to provide a better introductory overview of JITing, with code samples that don't rely on any libraries.
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If PHP Were British (2011)
PHP, as the result of a spectacular error of judgement, appears to be written in US English. How do we developers ensure the traditions of the British Empire continue to be upheld, even in the digital age?
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The last three years of my work will be permanently abandoned
It’s been almost two years since my last update here. A lot has happened. I hope you all are continuing to weather the ongoing multiple global pandemics and other anthropogenic crises. Apolog…
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Why I am learning category theory
Category theory is a domain of mathematics that exerts a strange influence over programmers. One thing that can be said for sure about category theory is tha...
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Speeding up the JavaScript ecosystem, one library at a time
Most popular libraries can be sped up by avoiding unnecessary type conversions or by avoiding creating functions inside functions.
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Dynamic types have the potential to be more than "no static types"
They have potential to be more than "no static types", but that hasn't happened.
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Emacs 29 is nigh
Table of Contents Major features Eglot is now part of Emacs core Tree-Sitter is also part of Emacs core Install packages from source with package.el Org mode 9.6 use-package in Emacs core Pure GTK Emacs is here for Wayland! Compile EmacsLisp files ahead of time Native access to SQLite databases HaikuOS support New…
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Working with Tailwind CSS every day for 2 years
For more than two years, I've been using Tailwind CSS almost every working day for company projects and a lot of weekends for my side projects.
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Keyboard shortcuts for GNU Readline
Most command line programs that offer line editing -- like bash, Python, GDB, psql, sqlite and more -- do so using GNU readline. Readline's a powerful library that grants history, completion, movement and editing to programs that use it --- and a stable and consistent set of keyboard shortcuts. Shame, then, that even…
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A Poor Man's API
Creating a full-fledged API requires resources, both time and money. You need to think about the model, the design, the REST principles, etc., without writing a single line of code. Most of the time, you don’t know whether it’s worth it: you’d like to offer a Minimum Viable Product and iterate from there. I want to…
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Stable Diffusion 2.0 and the Importance of Negative Prompts for Good Results
Negative prompts can be far superior than traditional prompt additions.
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Everything I wish I knew when learning C
Learning C was quite difficult for me. The basics of the language itself weren’t so bad, but “programming in C” requires a lot of other kinds of knowledge which aren’t as easy to pick up on:
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SwiftUI Is Convenient, but Slow
I've been sitting on publishing these notes for a while, because I don't want to diminish the work of the talented people that engineered SwiftUI and plowed through years of AppKit and UIKit code to get to this state. But I'd like to draw attention to some performance limitations, in the hope that a SwiftUI engineer…
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Falsehoods programmers believe about undefined behavior
All kinds of reasonable-sounding beliefs about undefined behavior are wrong. Let's go through them.
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GCC undefined behaviors are getting wild
Happy with my recent breakthrough in understanding C integer divisions after weeks of struggle, I was minding my own business having fun writing integer arithmetic code. Life was good, when suddenly… zsh: segmentation fault (core dumped) .
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Clang is better than GCC
Yes, this is a problem of weak static typing of pure C. Pure C is a great tool for some jobs, but here be dragons , as they say.
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Emacs Lisp shorthands as namespacing system
In Emacs version 28 Emacs developers introduced so-called read symbol shorthands. If you’re interested in the rationale, feel free to search the Emacs developer mailing list for the discussion. However, it does seem that not everyone likes the idea of shorthands as a substitution for namespaces (or packages, if you’re…
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Index Merges vs. Composite Indexes in Postgres and MySQL
Composite indexes aka multi-column indexes are about 10x faster than index merges. In Postgres, the gap is larger than in MySQL because Postgres doesn’t support index-only scans for queries that involve index merges.
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CRDT: Fractional Indexing
Collaborative peer-to-peer applications sometimes need to operate on sequences of objects with a consistent order across all peers. For example, a peer-to-peer photo album application might need to sync the order in which photos appear in an album.
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Babashka Clojure nREPL as a system interface
Dmitri's blog about programming, Clojure, and software development
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WebAssembly: TinyGo vs. Rust vs. AssemblyScript
A browser sorting benchmark comparing JavaScript, Go, TinyGo, Rust, and AssemblyScript, with source code and test conditions.
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Data-Oriented Programming in Python
Many users of Python deprioritize performance in favor of soft benefits like ergonomics, business value, and simplicity. Users who prioritize performance typically end up on faster compiled languages like C++ or Java.
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Cache invalidation really is one of the hardest problems in computer science
My colleagues recently wrote a great post on the Netflix tech blog about a tough performance issue they wrestled with. They ultimately diagnosed the problem as false sharing, which is a performance…
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Making all your integers positive with zigzag encoding
You sometimes feel the need to make all of your integers positive, without losing any information. That is, you want to map all of your integers from 'signed' integers (e.g., -1, 1, 3, -3) to 'unsigned integers' (e.g., 3,2,6,7). This could be useful if you have a fast function to compress integers that fails to ……
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89 Operating Systems
I occasionally do talks about curl. In these talks I often include a few slides that say something abut curl's coverage and presence on different platforms. Mostly to boast of course, but also to help explain to the audience how curl has manged to reach its ten billion installations. This is current incarnation of…