Funktioner

This is a collection of the resources I've found most useful when exploring the world of functional programming.

Books

• Professor Frisby's Mostly Adequate Guide To Functional Programming (JS)
• Learn You a Haskell
• Programming in Haskell (not free)
• Structure and Interpretation of Computer Programs

Overviews

• Fantasyland Spec: Algebraic Structures in JS (most data types with their laws)

Functors

• Simple Visual Guide to Functors, Applicatives and Monads
• Functor Laws and functions (JS)
• Contravariant Functors, Profunctors (video)

Monads

• Don't fear the monad (video) (good introduction to monads and monoids)
• Functor → Applicative → Monad (Monad Ladder from LYAHFGG)
• Free Monads (video)

Optics

• Thinking in Ramda: Lenses
• Lenses with Immutable.js

Category Theory

• Category Theory by Wadler (video) (products, sums/coproducts, exponentials)
• Bartosz Milewski Lecture Series (video):
  • Course 1
  • Course 2
  • Course 3

Patterns

• Thirteen Ways of Looking at a Turtle

Papers

• How to Declare an Imperative, Wadler
• Curse of the Excluded Middle, Meijer
• Functional Reactive Animation, Elliott & Hudak