Practicing Functional Programming: Vectors

I've been on a bit of a functional programming kick lately, and it's all starting to click. I came across some vector math for character movement in games [https://www.youtube.com/watch?v=sKCF8A3XGxQ&list=PLW3Zl3wyJwWOpdhYedlD-yCB7WQoHf-My] , and it seemed like a nice exercise to…