beej.us

Latest posts

• Rust RPN Calculator

  Oct 24, 2025

  Another Rust rabbit hole digging into some RPN calculator code.

• Exploring Rust Traits

  Oct 17, 2025

  Just randomly rabbit-holing down into how traits work in Rust.

• Using Virtual Environments in Python

  Oct 11, 2025

  A short how-to with just the basics to get going.

• Stop Using DRM on your Books

  Oct 09, 2025

  Why not to protect your books with DRM.

• Adding Mastodon Comments to your Blog

  Feb 21, 2025

  Comments powered by Mastodon? Yes, please!

• How Do You Prove Humanity?

  Mar 16, 2023

  Reflections on the new wave of AI.

• On the Importance of Hard Work

  Jan 27, 2023

  A historical retrogaming morality tale.

• Using Gamepads and Joysticks in JavaScript

  Mar 01, 2017

  Let's get some games written!

• Websockets: Writing the Server

  Nov 25, 2015

  Part 3 in the series: writing the server in NodeJS.

• Websockets: Writing the Client

  Nov 19, 2015

  Part 2 in the series: writing the client-side JavaScript.

• Intro to WebSockets

  Nov 17, 2015

  An overview of WebSockets, with a goal of writing a simple WebSockets-based chat client and server.

• Writing a NodeJS webserver

  Nov 09, 2015

  An exploration into building an HTTP server in NodeJS, and a look into what a webserver is, anyway.

• Transforming numbers

  Nov 05, 2015

  A little numerical diversion, changing things to other things.

• Writing a jQuery plugin to create scrolling regions in HTML

  Jul 10, 2012

  How to make a scrolling pane in HTML/CSS; in particular, how to wrap it all in a jQuery plugin for easy reuse.

• HTML canvas scratcher revisited

  Apr 23, 2012

  An exercise in refactoring code from being closely tied to a page to being less closely tied. This is based on the previous scratcher code.

• Computing π with Chudnovsky and GMP

  Apr 14, 2012

  Crank out as many digits of π as you desire! Limited only by your imagination! Crank out your own modest π in the browser, too! (Limited by 64-bit IEEE-754.)

• Object Pools

  Apr 01, 2012

  Featuring goats!

• Image Processing Convolutions

  Mar 24, 2012

  How to use convolution matrices for common image filters.

• Drag and Drop

  Mar 15, 2012

  Learn how it's done, and code your own.

• JavaScript inheritance with Prototypes

  Dec 21, 2010
• m4 Macros and CSS

  Dec 18, 2010

  Use the unholy m4 macro processor with CSS. Or not.

• HTML canvas <tt>globalCompositeOperation</tt>

  Nov 14, 2010

  Simulate a scratcher or scratch-off in-browser using HTML.

• Parallel Programming with OpenMP

  Mar 07, 2010

  Intro that includes a link to my OpenMP-enabled Mandelbrot set generator.

• The Mandelbrot Set

  Oct 13, 2017

  Includes cheesy little online explorer app.

• Minimax

  Feb 19, 2012

  Lookahead AI, just like what powers the WOPR

• Adobe AIR

  Feb 17, 2010

  Very very short getting-started document.

• Image Interlacing

  Feb 13, 2010
• HTML5 Canvas Part II: Pixel Manipulation

  Feb 09, 2010
• HTML5 Canvas Introduction

  Feb 07, 2010
• Function Pointers and Cooperative Multitasking

  Jan 29, 2010

  Just like Grandma used to multitask.

• Fuzz Testing

  Jan 27, 2010

  Super-Superrrrr... oh forget it.

• Object Oriented Thinking, Part II

  Jan 22, 2010
• Digital Sound

  Jan 19, 2010

  Generate some waveforms!

• Pointers in C Part I: Basics

  Jan 18, 2010

  It's really not that bad.

• Recursion

  Jan 13, 2010
• The Observer Pattern

  Jan 07, 2010

  Things happen. Your code observes them. What could be more exciting?

• The Monte Carlo Method for Game AI

  Jan 04, 2010

  Beat your computer at Connect-4.

• Getting Started with Flash Development

  Dec 31, 2009

  You can do it with free tools on the command line.

• Arch vs. Slackware, a friendly comparison

  Dec 30, 2009
• Object Oriented Thinking, Part I

  Dec 29, 2009
• Dijkstra's Shortest Path

  Dec 25, 2009
• Parsing XML Streams with SAX

  Dec 23, 2009

  No need to parse that whole DOM—just handle tags as they show up.

• Of Thunderbird and Usenet

  Dec 21, 2009

  For old NNTP froods.