What is difference between 'protocol' and 'delegate'?

792

---

What manual memory management ? How it work?

825

---

What is 'notification'?

810

---

How to download something from the internet?

819

---

What happens if the methods doesn’t exist?

837

---

What is latest xcode version?

832

---

What is meaning of 'atomic' keyword?

852

---

Difference between sax parser and dom parser ?

840

---

What is use of uiapplication class?

822

---

What is 'private', 'protected' and 'public' ?

931

---

What is synchronized() block in objective c? What is the use of that?

813

---

how push notification works?

829

---

What is difference between 'assign' and 'retain' keyword?

796

---

Procedure to push the app in appstore?

827

---

What are the application lifecycle in ios?

826

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