Explain ios switching applications?

845

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If any app can run in the background, what about battery life?

818

---

What do you know about home screen of ios?

821

---

Does ios supports multi-tasking functionality?

912

---

What is the mean of not running state in ios?

819

---

What are selectors in objective-c?

827

---

Explain what is storyboard?

773

---

Explain the significance of autorelease?

851

---

Explain mutable and immutable types in objective c programming language?

840

---

Explain "private", "protected" and "public"?

787

---

Explain me what is arc? How it works?

832

---

What is retain counts?

769

---

Who calls the main function of app during the app launch cycle in ios?

852

---

What are the features is ios 6?

853

---

Explain me what is fast enumeration?

875

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