Kata is a word borrowed from martial arts. It is a disciplined practice that one uses to practice their skills. I’ve made references to them a few times in this blog so here’s a video of me talking through the Coin Changer kata- which was the first one that I learned.

Vimeo keeps ramping down the resolution but the version on their site might be a little better https://vimeo.com/43790053. (I also did a longer version with a couple hiccups and a slightly different solution, but it’s in HD).