casademora

import Foundation

class Testing : NSObject
{
    private func privateWork() {
    }
    
    internal func internalWork(){
    }
    

casademora

//: Playground - noun: a place where people can play

import UIKit

protocol DataSource {
    func fetchValue() -> String?
}

protocol DataSourceCacheStrategy {
    func retrieve<T>(from: [DataSource], using: DataSource -> T?) -> T?

casademora

protocol Thing {
    var name: String { get }
}

protocol UsingThing {
    func doSomething(with: Thing)
}

struct Test: UsingThing {

casademora

//
//  ViewController.swift
//  BehaviorsDemo
//
//  Created by Saul Mora on 8/25/16.
//  Copyright © 2016 Magical Panda. All rights reserved.
//

import UIKit

casademora

//: Playground - noun: a place where people can play

import UIKit

public protocol Maths
{
  func doMath(left: Double, right: Double) -> Double
}

class Addition: NSObject, Maths

casademora

//: Playground - noun: a place where people can play
//To try out this code, copy and paste into a new Xcode playground.

import UIKit

class Operation: NSObject
{
  let nextOperation: Operation?
  init(next: Operation? = nil)
  {