In Objective-C, a derived class can access all the private members of its base class if it's defined in the interface class, but it cannot access private members that are defined in the implementation file. Is the statement above correct ?

Which one is correct (legal) floating-point literal ?

What happens when the following code executes?

Objective-C is a general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the (...) programming language

While calling a function by reference, it will copy the actual value of an argument into the formal parameter of the function. In this case, changes made to the parameter inside the function have no effect on the argument. Is the statement above True ?

Which method creates and returns an NSNumber object containing a given value, treating it as an NSInteger.

What сan you use to avoid msgSend function overhead?

What happens if two categories define methods with the same names for the same class?

What happens at runtime with the following: NSMutableString *tempString = [NSMutableString stringWithString:@"1"]; dispatch_sync(dispatch_get_main_queue(), ^{ [tempString appendString:@"2"]; NSLog(@"%@", tempString); }); [tempString appendString:@"3"];

A UIView is a superclass of:

Which of these methods is NOT invoked by the runtime itself?