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

731

---

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

739

---

Is swift an object-oriented programming language?

761

---

How can we make a property optional in swift?

786

---

Explain grand central dispatch (gdc).

767

---

What are the collection types that are available in swift?

746

---

Which is the superclass of all the view controller objects?

767

---

How can we define a base class in swift?

759

---

Explain swift vs objective-c.

812

---

Explain core data.

771

---

Explain the usage of class and benefits of inheritance.

745

---

What is optional binding?

817

---

What are the advantages of using swift?

766

---

What type of objects are basic data types in swift?

766

---

What are lazy stored properties, and how are they useful?

740

---