Many vendor Objective-C libraries (e.g., facebook-ios-sdk) instruct you to copy a certain subset of its repo's files/dirs into your Xcode project. One problem with this is then you do not know what...

Let me start by saying that I know it is a protected method and I'm not supposed to call it, but shouldn't it work since MemberwiseClone is defined in the Object class and String inherits from it? ...