Which statement about protocols is true?

Right after an exception occurs, your program executes the code from the:

When deleting a CoreData NSManagedObject, you can specify to also delete its properties from the database, by setting a rule called:

Correct statement for declaring a new category for UIColor class?

Which statement contains a valid code for adding a method, which is not necessary to implement within a class which will conform to the protocol?

A proper implementation of 'dealloc' method in your custom class must include:

let a:int=5 a=10 this code is true of false?

Which of the following accesses a variable in structure b?

What framework is KVO (key value observing) a part of?

Using UIViewController containment, which one of the following statements is true:

True or False? For an object to use constraints, it must have at least 3 constraint values.