本文系轉載,原文地址:http://blog.csdn.net/dongfengsun/article/details/4870650
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1：如果無法保證子類行爲的一致性，那麼就用委託 If the subClass cann't keep with superClass,use delegate rather than inheritance. |
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2:屏幕上看到的，都是UIVew Everything you see on Screen is UIView. |
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3:如果對性能要求高，慎用Interface Build if application's performance is important,be discreet for the interface build. |
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4:copy是創建，retain是引用 the copy operation is create a new one,but the retain operation is just a reference. |
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5：alloc需要release,convenient不需要release alloc method need corresponding release method,but convenient method not. |
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6:加載到NSArray/NSMutableArray裏的對象，不需要負責release The objects added to NSArray/NSMutableArray need not to be released. |
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7:IBOutlet,IBAction爲你開啓了訪問Interface Build中對象的大門 IBOutlet and IBAction open the door to access the objects in Interface build. |
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8:UIApplicationDelegate負責應用程序的生命週期，而UIViewController負責View的生命週期 UIApplicationDelegate is responsible for the application life cycle,but UIViewController for the UIView. |
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9:爲了程序的健壯性，請儘量實現Delegate的生命週期函數 if you want to develop a robust application,implement the life cycle methods as more as possbile. |
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10:哥觸摸的不是UIEvent,而是NSSet的UIView what you touch on screen is not UIEvent but UIView |
