Ask HN: What CS and Math books did you read in 2017?

Currently finishing up Structure and Interpretation of Computer Programs as per https://teachyourselfcs.com/#programming

Actually really enjoying it as a first introduction.

I decided to read a bit about category theory last year. I quite enjoyed "Category Theory for Programmers" as a practical introduction. You can read it online here: https://bartoszmilewski.com/2014/10/28/category-theory-for-p...

I also read "Basic Category Theory for Computer Scientists", which was a bit less practical but very good. https://mitpress.mit.edu/books/basic-category-theory-compute...