Scott Wlaschin：函数式程序员的工具箱

Scott Wlaschin demystifies functional programming terms like monads, monoids, functors and catamorphisms by showing how they fit into a small toolkit. He applies them to problems such as missing data, list handling, and functional dependency injection.

Why HN likes it: HN recommends it as the best beginner-friendly introduction to monoids, monads and other FP vocabulary.

“This was by far the best introduction to monoid, monads and few other functional programming terms.”