hallettj

/*
 * Concept for emulating higher-kinded types using Flow. Instead of passing
 * a type that has not been applied to parameters, this pattern passes
 * a type-level function that will map a parameter type to the desired
 * higher-kinded type applied to the given parameter.
 *
 * @flow
 */

// a higher-kinded type is represented indirectly via a type-level function from

jdegoes

Applied Functional Programming with Scala - Notes

Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

safareli

• Monads are Trees with Grafting
• Understanding F-Algebras
• The Interpreter Pattern Revisited
• Difference between free monads and fixpoints of functors?
• What is the “Free Monad + Interpreter” pattern?
• What are free monads?
• ScalaZ - Getting to grips with the Free Monad
• A Modern Architecture for FP
• Freer Monad, More Extensible Effects
• Dead-Simple Dependency Injection

josteink

On why stateful code is bad
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STUDENT: Sir, can I ask a question?
TEACHER: Yes!
STUDENT: How do you put an elephant inside a fridge?
TEACHER: I don't know.
STUDENT: It's easy, you just open the fridge and put it in. I have another question!
TEACHER: Ok, ask.
STUDENT: How to put a donkey inside the fridge?