swift函数和初始化控件（// MARK:分割线）

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        self.initView()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    // MARK:-initView
    func initView() {
        var view = UIView()
        view.frame = CGRectMake(0, 0, 100, 100)
        view.backgroundColor = UIColor.redColor()
        self.view.addSubview(view)
    }
    
}