How can we achieve singleton pattern in iOS?

849

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What is Delegation in iOS?

807

---

Why do we need to use @Synthesize in iOS operating system?

782

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Is the delegate for a CAAnimation retained in iOS operating system?

858

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How to represent layer objects in iOS operating system ?

809

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What is the difference between copies & retain in iOS operating system?

862

---

Is there any garbage collector concept available in iOS?

816

---

How can an operating system improve battery life while running an app in iOS operating system?

814

---

What are layer objects in iOS operating system?

833

---

What is notification in iOS?

871

---

Explain how an autorelease pool works at the runtime level in iOS

950

---

What is sandbox in iOS operating system?

963

---

What is categories in iOS?

863

---

Explain the correct way to manage Outlets memory in iOS.

805

---

What is difference between synchronous and asynchronous in web request in iOS operating system?

829

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