How many arguments does a deinitializer accept?

What is a closure in Swift?

Are function/argument labels necessary in swift function calls ?

           0: For yes 1: For no

Can a subclass modify the value of a constant property it inherits?

What keyword is used to indicate that a closure is allowed to escape?

What will be the output of the following code?

Which keyword should be used when overriding designated initializers with convenience initializers in Swift?

When is the didSet observer called in Swift?

Does Swift provide shorthand argument names in closures?

What are reference types in Swift?

Fill in the blanks for the answer.

Reference types in Swift are not copied when they are assigned to a variable or constant, or when they are passed to a function.