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

793

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

794

---

Is swift an object-oriented programming language?

830

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How can we make a property optional in swift?

866

---

Explain grand central dispatch (gdc).

819

---

What are the collection types that are available in swift?

795

---

Which is the superclass of all the view controller objects?

821

---

How can we define a base class in swift?

817

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Explain swift vs objective-c.

870

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Explain core data.

825

---

Explain the usage of class and benefits of inheritance.

800

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What is optional binding?

872

---

What are the advantages of using swift?

823

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What type of objects are basic data types in swift?

819

---

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

799

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