swift5.0 协议

class TestClass
{
    
}

protocol Protocol1
{
    var value1:String{set get}
    
    func paly1() -> String
}

protocol protocol2
{
    var value2:String{get}
    
    func paly2() -> String
}

class Data:TestClass, Protocol1,protocol2
{
    var value1: String
    
    var value2:String{
       
      return "value442"
   }
    
    init(value1:String) {
        self.value1 = value1
    }
    
    func paly1() -> String {
        return self.value1
    }
    func paly2() -> String {
        return self.value2
    }
}

var data = Data(value1: "hello")

print(data.paly2())

data.value2 = "开裆裤定位"
print(data.paly2())

class Data
{
    init() {
        print("Data init")
    }
    
    func play()
    {
        print("data play")
    }
    
}

class Test
{
    lazy var data:Data = Data()
    
    init() {
        print("Test init")
    }
}

var test = Test()
test.data