Tutorial LSP-Part3.swift

protocol Friendly {
    func highFive()
}

protocol Angrily {
    func rude()
}

extension Friendly {
    func highFive() {
        print("Hello")
    }
}

extension Angrily {
    func rude() {
      print("shit")
    }
}

class Personage {
}

class Singer: Personage, Friendly{
}

class Waiter: Personage, Friendly {
}

class Thief: Personage, Angrily { 
}

let singer = Singer()
singer.highFive()

let thief = Thief()
thief.rude()