// Swift懶加載使用lazy關鍵字來修飾屬性
// 在屬性後面跟= {}進行具體的賦值
// 只會被加載一次
lazy var names : [String]? = {
// () -> ([String]) in
print("加載數據")
return ["why", "lnj", "lmj"]
}()
override func viewDidLoad() {
super.viewDidLoad()
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
print(names);
print(names);
print(names);
print(names);
}