How to add an element into an array?

Explain some common features of protocols & superclasses.

What is optional chaining?

What is a guard statement?

Who calls the main function of our app during the app launch cycle?

What is the benefit of using guard statement in swift?

Explain some biggest changes in usernotifications.

What is “defer”?

What are ui elements?

What is the difference between array and nsarray?

What are the most important features of swift?

What are the different ways to pass data in swift?

What is the use of double question mark “??” In swift?

Where can we test the apple iphone apps if we don’t have an ios device?

What is a guard statement? What is the benefit of using guard statement in swift?