Swift3.0 和 Swift3.0.2的区别

改变代码的横竖屏 3.0

override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask

3.0.2

func supportedInterfaceOrientations(for window: UIWindow?) -> UIInterfaceOrientationMask{
        return .portrait
    }

---

加载URL 3.0 

let url = Bundle.main.urlForResource("main.json", withExtension: nil)

3.0.2

let url = Bundle.main.url(forResource: "main.json", withExtension: nil)

---

GCD 延迟加载 3.0 

        DispatchQueue.main.after(when: DispatchTime.now() + 1) {
            
        }

3.0.2

        let dispatchTime = DispatchTime.now() + 1
        DispatchQueue.main.asyncAfter(deadline: dispatchTime) {

        }