class ViewController: UIViewController {

    //格式:定义变量时前使用lazy来修饰变量,后面通过等到赋值一个闭包

    // 注意点:1.必须是用var 2.闭包后面必须跟上()

    lazy var detaList:[String] = {

        ()->[String]

        in

        print("我被骗了")

        return ["","",""]

    }()

    //如果闭包是用于懒加载,那么in之前的代码都可以删除 包括in在内

    lazy var detaList2:[String] = {

        print("我被骗了2")

        return ["","",""]

    }()

    let demoFunc = {

        ()->[String]

        in

        print("我被骗了3")

        return ["","",""]

    }

    lazy var dataList3:[String] = self.demoFunc()

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {

         print(detaList)

         print(detaList2)

         print(dataList3)

         print(demoFunc())

    }

}