摘要： When is the most conenient time for you? It's my treat this time.. The sooner the better.. 阅读全文

摘要： Q-->question A-->answer M-->mention The Chapter 15th Delegate M:委托链(用于多播委托)=>其实质就是一个委托引用的_invocationList数组,其保存着另外几个委托对象,回调时,遍历此数组回调其中的每一个方法 M:如果委托有返回值,则其得到的结果为最后一个委托的方法的返回值,同时,... 阅读全文

摘要： Where are you headed? I wasn't born yesterday.. How can I get in touch with you? 阅读全文

摘要： Q-->question A-->answer M-->mention The Chapter 15th Delegate M:委托非常类似于代表一个函数地址的非托管C/C++ typedef,它就是一系列方法的封装 M:一个委托可以调用另一个类型的私有成员,这样做不会损失安全性和可访问性 Q:何为协变及反协变?A:协变=>一个方法能返回从委托的返回... 阅读全文

摘要： Your satisfaction is guaranteed. You've got it. You'll get used to it.. You've made a good choice.. 阅读全文