Apa arti tanda seru dalam bahasa Swift?
Panduan Bahasa Pemrograman Swift memiliki contoh berikut: class Person { let name: String init(name: String) { self.name = name } var apartment: Apartment? deinit { println("\(name) is being deinitialized") } } class Apartment { let number: Int init(number: Int) { self.number = number }...