What is a trailing closure?

Which of the following statements is true regarding Swift closures and functions?

What are the available arithmetic overflow operators in Swift?

What specifies custom infix operator?

Which of following statements about functions is wrong?

In the below text, what type of return does the function ‘area’ give? Class Square: NamedShape { var sideLength: Double func area() -> Double { return sideLength*sideLength } }

func addStudent(_ student: Student) { concurrentStudentQueue.async(flags: .barrier) { self._students.append(student) DispatchQueue.main.async { // self.postContentAddedNotification() } } } The code will ensure that the submitted DispatchWorkItem will be executed in parallel with any other DispatchWorkItem in the same queue.

GCD conforms with the ____ order.

A Switch statement cannot handle String.

In which data types can you define methods?

Swift allows you to write semicolons at the end of statement.