Haskell Course - Lesson 18 - Functors

Outline:
0:00 - Introduction and Outline
1:13 - Abstracting the map function
6:10 - Abstracting the Functor type class
19:35 - Defining Functor instances
24:30 - Seemingly unintuitive Functor instances: Either a
27:10 - Seemingly unintuitive Functor instances: (,) a
33:12 - Seemingly unintuitive Functor instances: functions
41:18 - Defining the functor operator and lifting a function
46:27 - Functor nesting dolls
49:39 - Extra functions and Functor as defined in base

[Timjstewart]

Your teaching skills are excellent! Thank you!