本文分享了iOS开发中的十个实用技巧，包括使用委托而非继承、UIKit组件的应用、性能优化建议、内存管理策略等，为开发者提供了一套完整的iOS开发实践指南。
| 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 |
from:http://blog.youkuaiyun.com/dongfengsun/archive/2009/11/25/4870650.aspx
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