前言：iPhone是个极具艺术性的平台，相信大家在开发过程中一定有很多感触，希望能写出来一起交流，所以开了这个帖子，以后还会维护。

如果大家和我一样有感触的话，可以跟在帖子下面，最好简短并附上中英文：）

1：如果无法保证子类行为的一致性，那么就用委托

If the subClass cann't keep with superClass,use delegate rather than inheritance.

2:屏幕上看到的，都是UIVew

Everything you see on Screen is UIView.

3:如果对性能要求高，慎用Interface Build

if application's performance is important,be discreet for the interface build.

4:copy是创建，retain是引用

the copy operation is create a new one,but the retain operation is just a reference.

5：alloc需要release,convenient不需要release

alloc method need corresponding release method,but convenient method not.

6:加载到NSArray/NSMutableArray里的对象，不需要负责release

The objects added to NSArray/NSMutableArray need not to be released.

7:IBOutlet,IBAction为你开启了访问Interface Build中对象的大门

IBOutlet and IBAction open the door to access the objects in Interface build.

8:UIApplicationDelegate负责应用程序的生命周期，而UIViewController负责View的生命周期

UIApplicationDelegate is responsible for the application life cycle,but UIViewController for the UIView.