Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.
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
| package utils | |
| import java.nio.ByteBuffer | |
| import cats.data.Xor | |
| import io.circe.Json | |
| import play.api.http.LazyHttpErrorHandler | |
| import play.api.http.Status._ | |
| import play.api.libs.iteratee.{Iteratee, Traversable} | |
| import play.api.mvc.BodyParsers.parse._ |
As compiled by Kevin Wright a.k.a @thecoda
(executive producer of the movie, and I didn't even know it... clever huh?)
please, please, please - If you know of any slides/code/whatever not on here, then ping me on twitter or comment this Gist!
This gist will be updated as and when I find new information. So it's probably best not to fork it, or you'll miss the updates!
Monday June 16th
"For comprehension" is a another syntaxe to use map, flatMap and withFilter (or filter) methods.
yield keyword is used to aggregate values in the resulting structure.
This composition can be used on any type implementing this methods, like List, Option, Future...