不及格的程序员-八神

摘要：1 /* Basic data types for Objective C. 2 Copyright (C) 1993, 1995, 1996, 2004 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistrib... 阅读全文

摘要：public class UDIParser { /// <summary> /// 数据库UDI解析规则数据映射:iKeyID, cDateFormat, cKeyValue, iPos_From, iPos_To, /// </summary> public static System.Coll 阅读全文

摘要：双检锁技术 C# public sealed class Singleton { private static Singleton _instance; private static readonly object LockObject = new object(); // 私有构造函数，防止外部实 阅读全文

摘要：1、Object-C有多继承吗？没有的话用什么代替？ cocoa 中所有的类都是NSObject 的子类 多继承在这里是用protocol 委托代理 来实现的你不用去考虑繁琐的多继承 ,虚基类的概念.ood的多态特性 在 obj-c 中通过委托来实现. 2、Object-C有私有方法吗？私有变量呢？ 阅读全文

摘要：UIDateicker并没有继承UIPickerView,它的宽度只有iphone的宽度，在ipad上直接显示出来非常不协调，所以苹果建议用UIPopoverViewController来显示，所以你可以在里面任意定制。 在iphone中显示需要手动配制动画，因为它只是一个视图。所以你有下面几种方式 阅读全文

摘要：json: 效果图： 阅读全文

摘要：Ah found it, they are saved at:~/Library/Developer/Xcode/UserData/CodeSnippets/Each one is a plist file. In contrast to Xcode 3 there is now one file per snippet. 阅读全文

摘要：Your app has aUIWindow, which contains your root view controller's view, which contains the button:UIWindowyour root viewUIButtonWhat you didn't understand is that theUIWindowrotates the user interface by applying a rotation transform to your root. Take a look at the view hierarchy when the 阅读全文

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摘要：When you run the Build and Archive command, Xcode 3.2.2 or later fetches your application binary and its associated .dSYM file and saves them in your 阅读全文

摘要：Using Injection it is possible to make a change to the implementation of an Objective-C® class and have it take effect as soon as the class is saved without having to restart the application. This feature works for OS X and iOS applications in the simulator and on iOS devices. 阅读全文

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