SWIFT-Protocol與Delegate

Reference: 
電腦人-SWIFT自學力!圖解140個iOSAPP開發範例給新手的超直覺設計指南
範例下載-Github https://github.com/WEI-WEI-SWIFT/iOS-Swift-Cookbook-2AU040

//********************************************************************

//********************************************************************

//********************** Protocol and Delegate ***********************

//********************************************************************

//********************************************************************

protocol BossDelegate{

    func makeMoneyForBoss()

}

class Employee:BossDelegate{

    func makeMoneyForBoss() {

        print("水喔$$$$$")

    }

}

class Boss{

    var delegate:BossDelegate?

    func gonnaMakeMoney(){

        delegate?.makeMoneyForBoss()

    }

}

let aBoss = Boss()

let aEmployee = Employee()

aBoss.delegate = aEmployee

aBoss.gonnaMakeMoney()