It's built in a modular way. The "world" (renderer, building state, lift behavior) is separate from the "controller" code, which determines which lift is sent to which floor when someone presses a button.
See it in action at http://simlift.meidosem.com/.
Play music with your face! You can see the source code here: https://glitch.com/edit/#!/face-the-music
A pytest plugin providing fixtures for running tests in transactions using Flask-SQLAlchemy.
A Perl REPL with support for tab completion, automatic class reloading, history support, and more.
A review of the last 30 years of computer input latency. Computers are getting faster, but latency keeps growing.
An interesting look at how to program a pen plotter to draw a Dragon Curve during a workshop at RC!
A Golang driver implementation for Bitcoin's lightning network.
An overview of how you can use Nix to build a better deploy process -- one that is automatic, repeatable, idempotent, reversible, and atomic.
A guide to patching the Ruby interpreter's parser to add an increment (e.g., i++) operator.
It's not every day that you uncover a 16th-century calendar bug in Ruby!