Un-Answered Questions { Apple iOS Swift }

What are the most important features of swift?

471


What are the different ways to pass data in swift?

459


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

516


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

476


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

463


Is swift an object-oriented programming language?

474


How can we make a property optional in swift?

501


Explain grand central dispatch (gdc).

471


What are the collection types that are available in swift?

459


Which is the superclass of all the view controller objects?

489


How can we define a base class in swift?

467


Explain swift vs objective-c.

523


Explain core data.

472


Explain the usage of class and benefits of inheritance.

470


What is optional binding?

486