Second category theory study group meetup

Homework ;-) read the following:

• Preface (https://bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-preface/)

• Chapter 1 (https://bartoszmilewski.com/2014/11/04/category-the-essence-of-composition/)

• Chapter 2 (https://bartoszmilewski.com/2014/11/24/types-and-functions/)

Also do the exercises, have fun!