Conclusively speaking
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I have class A that contains a instances of B. And in class A, I pass a function of A as selector to A method of B. And B use this selector to register notification. However, when the notification comes in, it could not run the selector and show "unrecognized selector sent to instance". If I move all what I want to do in class B into class A, it worked. However, I want them separated so that it seems more organized. I am fairly new to Objective-C and Swift, therefore, I don't know how to pass selector as parameter in this case. Answer in Swift would be great.I have class A th
