ViewController文件

记录下

//  ViewController.swift

import UIKit
//默认生成的主控制器类
class ViewController: UIViewController {
    //当控制器的视图类夹在完成时调用
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }
    //系统触发内存警告的时候调用
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    //


}