class Naokun: Person, PencilDelegate, SteelDelegate, NotebookDataSource {
var age: Int?
let nickName = "naokun"
var favoriteLanguage: String?
init(age: Int) {
self.age = age
}
func sayHi(to: String) {
print("Hello, \(to)")
}
func buildHomePage(url: String) {
print("Building...")
print("<head><meta name='GENERATOR' value='ホームページV3'></head>")
print("Completed!")
}
func shootDrone(x: Double, y: Double, z: Double) {
print("tatatatatatata")
}
}