A few months ago, I set myself the challenge of writing a C compiler in 500 lines of Python1, after writing my SDF donut post. How hard could it be? The answer was, pretty hard, even when dropping quite a few features. But it was also pretty interesting, and the result is surprisingly functional and not too hard to understand! There's too much code for me to comprehensively cover in a single blog
Today we’re excited to announce the release of TypeScript 5.2! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by making it possible to declare and describe types. Writing types in our code allows us to explain intent and have other tools check our code to catch mistakes like typos, issues with null and undefined, and more. Types also power TypeScript’s edi
Update 1.69.1: The update addresses these issues. Update 1.69.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the June 2022 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: 3-way merge editor - Resolve merge conflicts wit
microgpt
This is a brief guide to my new art project microgpt, a single file of 200 lines of pure Python with no dependencies that trains and inferences a GPT. This file contains the full algorithmic content of what is needed: dataset of documents, tokenizer, autograd engine, a GPT-2-like neural network architecture, the Adam optimizer, training loop, and inference loop. Everything else is just efficiency.
Golang Mini Reference 2022: A Quick Guide to the Modern Go Programming Language (REVIEW COPY)
Golang Mini Reference 2022 A Quick Guide to the Modern Go Programming Language (REVIEW COPY) Harry Yoon Version 0.9.0, 2022-08-24 REVIEW COPY This is review copy, not to be shared or distributed to others. Please forward any feedback or comments to the author. • feedback@codingbookspress.com The book is tentatively scheduled to be published on September 14th, 2022. We hope that when the release da
Why GitHub Actually Won
A few days ago, a video produced by @t3dotgg was posted to his very popular YouTube channel where he reviews an article written by the Graphite team titled “How GitHub replaced SourceForge as the dominant code hosting platform”. Theo’s title was a little more succinct, “Why GitHub Won”. Being a cofounder of GitHub, I found Greg’s article and Theo’s subsequent commentary fun, but figured that it mi
Most of my readers are probably familiar with procedural programming, object-oriented programming (OOP), and functional programming (FP). The majority of top programming languages on all of the language popularity charts (like TIOBE) support all three to some extent. Even if a programmer avoided one or more of those three paradigms like the plague, they’re likely at least aware of them and what th
Over the course of my Spring 2020 semester at Harvey Mudd College, I developed a self-hosting compiler entirely from scratch. This article walks through many interesting parts of the project. It’s laid out so you can just read from beginning to end, but if you’re more interested in a particular topic, feel free to jump there. Or, take a look at the project on GitHub. Table of contents What the pro
World’s First MIDI Shellcode Jan 2025 · 45 min read I gained remote code execution via MIDI messages to trick my synth into playing Bad Apple on its LCD. This blog post is about my journey with this reverse engineering project. Final iteration of Bad Apple The beginning I’ve had this Yamaha PSR-E433 synth for a very long time, and a couple of years ago I decided to open it up — partly because it w
How a simple Linux kernel memory corruption bug can lead to complete system compromise
In this case, reallocating the object as one of those three types didn't seem to me like a nice way forward (although it should be possible to exploit this somehow with some effort, e.g. by using count.counter to corrupt the buf field of seq_file). Also, some systems might be using the slab_nomerge kernel command line flag, which disables this merging behavior. Another approach that I didn't look
Shai Hulud Strikes Again (v2)Another wave of Shai-Hulud campaign has hit npm with more than 500 packages and 700+ versions affected. Update: November 26, 2025 PostHog has published a detailed post mortem describing how one of its GitHub Actions workflows was abused as an initial access vector for Shai Hulud v2. An attacker briefly opened a pull request that modified a script executed via pull_requ
I did this in 2020 and then again in 2021, but I’m in the mood to look around again. Let’s look through Are We GUI Yet? and see what’s up these days. The task today is to have a text label and an input field that can change the text in the label. In React, for example, this is basically free: const Demo = () => { let [state, setState] = useState("Hello, world!"); return ( <div> <p>{state}</p> <inp
This year’s Advent of Code has been brutal (compare the stats of 2023 with that of 2022, especially day 1 part 1 vs. day 1 part 2). It included a problem to solve with dynamic programming as soon as day 12, which discouraged some people I know. This specific problem was particularly gnarly for Advent of Code, with multiple special cases to take into account, making it basically intractable if you
In 2006 Microsoft conducted a customer survey to find what new features users want in new versions of Microsoft Office. To their surprise, more than 90% of what users asked for already existed, they just didn't know about it. To address the "discoverability" issue, they came up with the "Ribbon UI" that we know from Microsoft Office products today. Office is not unique in this sense. Most of us ar
Host your own Mastodon instance on a Raspberry Pi - Raspberry Pi
The ongoing emergency at Twitter has made a lot of us take a serious look at social media. After a lot of debate here at Pi Towers, we’ve now spun up our own Mastodon instance. The best thing about it? It’s running on a Raspberry Pi 4 hosted at Mythic Beasts. Last time we talked about Mastodon, we told you why we were doing it. Today’s post talks about how you can join us. Our own Mastodon instanc
I’m excited to announce the project I’ve been working on for the last year and a half: Game Bub, an open-source FPGA based retro emulation handheld, with support for Game Boy, Game Boy Color, and Game Boy Advance games. May 2025 Update: Want to buy a prebuilt Game Bub? I’m launching a crowdfunding campaign on Crowd Supply! Sign up to be notified when the campaign goes live. Play Video: Game Bub ca
Try Mastering Emacs for free! Are you struggling with the basics? Have you mastered movement and editing yet? When you have read Mastering Emacs you will understand Emacs. It’s that time again: there’s a new major version of Emacs and, with it, a treasure trove of new features and changes. Notable features include the formal inclusion of native compilation, a technique that will greatly speed up y
FEgrowを用いたアクティブラーニングによる化合物スクリーニングの高速化【In silico創薬】 - LabCode
本記事では、**FEgrow**というインシリコ創薬ツールとアクティブラーニング（Active Learning, AL）を組み合わせ、in silico screeningで得られた化合物を基にさらに効率よくスクリーニングしていく方法を紹介します。 動作検証済み環境 動作検証済み環境Windows 11 Home, 13th Gen Intel(R) Core(TM) i7-13700, 64 ビット オペレーティング システム、x64 ベース プロセッサ, メモリ：32GB 自宅でできるin silico創薬の技術書を販売中 新薬探索を試したい方必読！ ITエンジニアである著者の視点から、wetな研究者からもdryの創薬研究をわかりやすく身近に感じられるように解説しています 技術書ページへ 自宅でできるin silico創薬の技術書を販売中 分子ドッキングやMDシミュレーションなど、
Update 1.73.1: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the October 2022 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Search include/exclude folders - Quickly set folders to include/exclude in the tree view. Comma
You must know the power of Object-oriented programming if you have ever worked with object-oriented languages like Java, C#, and much more. Python also supports object-oriented programming, and we can define a class in Python. Let’s explore more about how to achieve this in Python. In the post Getting Started with Python, I have covered the essentials required before becoming a data scientist. In
The simplicity of Prolog
Back to homepage 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 all imperative (and for the most part object-oriented) languages,
Large Text Compression Benchmark Matt Mahoney Last update: Mar. 25, 2026. history This competition ranks lossless data compression programs by the compressed size (including the size of the decompression program) of the first 109 bytes of the XML text dump of the English version of Wikipedia on Mar. 3, 2006. About the test data. The goal of this benchmark is not to find the best overall compress
The sad state of property-based testing libraries Posted on Jul 2, 2024 Property-based testing is a rare example of academic research that has made it to the mainstream in less than 30 years. Under the slogan “don’t write tests, generate them” property-based testing has gained support from a diverse group of programming language communities. In fact, the Wikipedia page of the original property-bas
Web scraping is the process of downloading data from a public website. For example, you could scrape ESPN for stats of baseball players and build a model to predict a team’s odds of winning based on their players stats and win rates. Below are a few use-cases for web scraping. Monitoring the prices of your competitors for price matching (competitive pricing). Collecting statistics from various web
std::flip
std::flip is a little-known utility from the C++ standard library header <functional>: it is a higher-order function that accepts a Callable and returns an equivalent Callable with the order of its parameters reversed (or “flipped”). To understand how it can be useful, let’s start with a simple example. Consider the following tree node class: struct node { int value; node* parent = nullptr; node*
Primitive Recursive Functions For A Working Programmer Aug 1, 2024 Programmers on the internet often use “Turing-completeness” terminology. Typically, not being Turing-complete is extolled as a virtue or even a requirement in specific domains. I claim that most such discussions are misinformed — that not being Turing complete doesn’t actually mean what folks want it to mean, and is instead a stand
Simon Peyton Jones
Recorded 2022-02-01. Published 2022-03-25. Simon Peyton Jones is interviewed by Andres Löh and Joachim Breitner. Simon is the creator of Haskell and in this episode he talks about his new position at Epic, the origins of Haskell and why “it feels right”, and the (extra)ordinary Haskell programmers. Andres Löh: Hello Simon. Thank you so much for joining us today. Simon Peyton Jones: Hi Andres, hi J
Update 1.93.1: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the August 2024 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Profiles editor - Switch and manage your profiles from a single place. Django unit test support
Current Status The t64 transition is settled by June 2024 (no official announcement was made). If any of your packages are not upgraded to the latest version on your Debian Testing or Debian Unstable/Sid system, now it is the time to sort it out manually. The transition coordination occurred on #debian-devel IRC. A fairly exhaustive analysis of ABI changes was done from May–October 2023. About 495
AITOW/README.md at master · rayfrankenstein/AITOW
#AgileKillsKittens (or Agile In Their Own Words: The Problem With Agile & Scrum) A curated list of negative developer comments about Agile and Scrum on social media (Please note that while the word “Scrum” has been kept intact in the quoted comments, the reader should make no distinction between Scrum and Agile. The corporate world makes no distrinction, and we should not give others the defense o
Deciphering Glyph :: You Should Compile Your Python And Here’s Why
write Python that’s faster than C by optimizing your code, adding standard type annotations, and using Mypyc. In this post I’d like to convince you that you should be running Mypyc over your code1 — especially if your code is a library you upload to PyPI — for both your own benefit and that of the Python ecosystem at large. But first, let me give you some background. Python is Slow, And That’s Fin
Jupyter in Visual Studio Code – June 2021 Release - Microsoft for Python Developers Blog
We are pleased to announce that the June 2021 release of the Jupyter Extension for Visual Studio Code is now available. If you are working with Python, we recommend downloading the Python extension from the Marketplace, or installing it directly from the extension gallery in Visual Studio Code. If you already have the Python extension installed, you can also get the latest update by restarting Vis
Timsort — the fastest sorting algorithm you’ve never heard of
Timsort — the fastest sorting algorithm you’ve never heard of Photo by Andrew Meehan / Unsplash Timsort: A very fast , O(n log n), stable sorting algorithm built for the real world — not constructed in academia. Image from here.Timsort is a sorting algorithm that is efficient for real-world data and not created in an academic laboratory. Tim Peters created Timsort for the Python programming langua
GitHub - ComfyUI-Workflow/awesome-comfyui: A collection of awesome custom nodes for ComfyUI
ComfyUI-Gemini_Flash_2.0_Exp (⭐+172): A ComfyUI custom node that integrates Google's Gemini Flash 2.0 Experimental model, enabling multimodal analysis of text, images, video frames, and audio directly within ComfyUI workflows. ComfyUI-ACE_Plus (⭐+115): Custom nodes for various visual generation and editing tasks using ACE_Plus FFT Model. ComfyUI-Manager (⭐+113): ComfyUI-Manager itself is also a cu
Django for Startup Founders: A better software architecture for SaaS startups and consumer apps
In an ideal world, startups would be easy. We'd run our idea by some potential customers, build the product, and then immediately ride that sweet exponential growth curve off into early retirement. Of course it doesn't actually work like that. Not even a little. In real life, even startups that go on to become billion-dollar companies typically go through phases like: Having little or no growth fo
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Writing a C compiler in 500 lines of Python
Announcing TypeScript 5.2 - TypeScript
June 2022 (version 1.69)
Implementing Logic Programming
Kalyn: a self-hosting compiler for x86-64
World's First MIDI Shellcode
Shai Hulud Strikes Again (v2) - Socket
A 2025 Survey of Rust GUI Libraries
Dynamic Programming is not Black Magic - Quentin Santos
Lesser Known PostgreSQL Features
Game Bub: open-source FPGA retro emulation handheld
What's New in Emacs 28.1?
October 2022 (version 1.73)
Object-oriented Programming in Python
Large Text Compression Benchmark
The sad state of property-based testing libraries
How to Crawl the Web with Scrapy
Primitive Recursive Functions For A Working Programmer
August 2024 (version 1.93)
ReleaseGoals/64bit-time - Debian Wiki