(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
class A | |
class A2 extends A | |
class B | |
trait M[X] | |
// | |
// Upper Type Bound | |
// | |
def upperTypeBound[AA <: A](x: AA): A = x |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
/* | |
* Copyright 2015 Databricks, Inc. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); you may | |
* not use this file except in compliance with the License. You may obtain | |
* a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software |
object TypeclasseDemo { | |
// The parts of the type class pattern are: | |
// | |
// 1. the "type class" itself -- a trait with a single type parameter; | |
// | |
// 2. type class "instances" for each type we care about, | |
// each marked with the `implicit` keyword; | |
// | |
// 3. an "interface" to the type class -- one or more methods |