Over the last month, I’ve been experimenting with a code taken from a Ruby Refactoring kata called Tennis Game. I’m applying many different techniques to learn from the existing code and to shape a better code. Some of those refactorings are simple, like extracting paramater objects, some are bigger like turning code into data.

People seem to like it, so I thought I ‘d share it here as well.

Every technique/transformation is recorded as a separate video. The videos (at the moment there’s 17 of them) are put into 1 YouTube playlist here:

https://www.youtube.com/playlist?list=PLr2F5WUnrawteDffEUvCLSzZklOErPIdR