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.
9：为了程序的健壮性，请尽量实现Delegate的生命周期函数
If you want to develop a robust application,implement the life cycle methods as more as possbile.
10：哥触摸的不是UIEvent,而是NSSet的UIView
What you touch on screen is not UIEvent but UIView
暂时想到这些，欢迎大家继续补充......^_^!