[franknine]

Highly recommend Functional Programming in C#: https://www.manning.com/books/functional-programming-in-c-sh... If you want to learn how to do some functional in C#.

If you just need some ready-made monads, language-ext is the way to go: https://github.com/louthy/language-ext

We tried to bring some functional ideas into our Unity3D codebase with help of these resources, it's hard but doable.