[Swift] 기초 예제 4 (클래스, 복사)

//code1
public var number : Int = 0

class MyMarvel {
    var heroName : String
    
    init(_ heroName : String) {
        self.heroName = heroName
        number = number+1
        show()
    }
    
    func ordinalCheck() -> String {
            if number == 1 {
                return "st"
            }
            else if number == 2 {
                return "nd"
            }
            else if number == 3 {
                return "rd"
            }
            else {
                return "th"
            }
    }

    func show() {
        if number % 2 == 1 {
            print("Hello \(heroName), you are \(number)\(ordinalCheck()).")
        }else{
            print("Hi \(heroName), you are \(number)\(ordinalCheck()).")
        }
            
    }
}

var hero1 : MyMarvel = MyMarvel("아이언맨")
var hero2 : MyMarvel = MyMarvel("토르")
var hero3 : MyMarvel = MyMarvel("헐크")
var hero4 : MyMarvel = MyMarvel("캡틴")
var hero5 : MyMarvel = MyMarvel("블랙위도우")
var hero6 : MyMarvel = MyMarvel("호크아이")
var hero7 : MyMarvel = MyMarvel("타노스")
var hero8 : MyMarvel = MyMarvel("앤트맨")
var hero9 : MyMarvel = MyMarvel("닥터스트레인지")
var hero10 : MyMarvel = MyMarvel("비전")


//code2

import Foundation

class Player{
    var Playername : String
    
    init (name : String){
        Playername = name
    }
    
    var name : String {
        get {
            return Playername
        }
        set {
            Playername = newValue
        }
    }
    
    func displayname() -> String {
        return "\(Playername) 선수"
    }

}

class Friend : NSCopying{
    var Friendname :  String
        
        init (name : String){
            Friendname = name
        }
    
       func copy(with zone : NSZone? = nil) -> Any {
                return Friend(name: Friendname)
            }
        
        var name : String {
            get {
                return Friendname
            }
            set{
                Friendname = newValue
            }
        }
        
        func displayname() -> String {
            return "\(Friendname) 선수"
        }

}

let playerOne : Player = Player(name : "호날두")
let playerTwo : Player = playerOne
playerOne.name = "메시"
print("P1 : \(playerOne.displayname())") //P1 : 메시 선수
print("P2 : \(playerTwo.displayname())") // P2 : 메시 선수

var friendOne : Friend  = Friend(name : "둘리")
var friendTwo : Friend = friendOne.copy() as! Friend
friendOne.name = "도우너"
print("F1 : \(friendOne.displayname())") //F1: 도우너선수
print("F2 : \(friendTwo.displayname())") //F2 : 둘리선수

NSCopying 프로토콜을 사용하면 깊은복사 사용할 수 있음