class MainClass {
var name: String
init(name: String) {
self.name = name
}
convenience init() {
self.init(name: "[匿名]")
}
}
let main = MainClass(name: "W3xue")
print("MainClass 名字为: \(main.name)")
let main2 = MainClass()
print("没有对应名字: \(main2.name)")
class SubClass: MainClass {
var count: Int
init(name: String, count: Int) {
self.count = count
super.init(name: name)
}
override convenience init(name: String) {
self.init(name: name, count: 1)
}
}
let sub = SubClass(name: "W3xue")
print("MainClass 名字为: \(sub.name)")
let sub2 = SubClass(name: "W3xue", count: 3)
print("count 变量: \(sub2.count)")
