It's almost December which means it's almost time for Advent of Code 2019. Advent of code is an annual computer programming competition created and ruyn by Eric Wastl. It's been running since 2015. I've written about it before, mostly from a teacher's point of view (Solve A to Solve B, Data structures and Hidden Complexity, Tools can shape how we think and a few others). Basically, Eric releases one poblem a day at midnight from Dec 1 through Dec 25.