Answer / Dilip Kumar Baskey

A simple example of a category in Objective-C would be adding new methods to the existing NSObject class: @interface NSObject (MyCategory) - (void)myMethod; @end

Which class is used to establish a connection between applications to the web server?

1 Answers  

---

What is synchronized() block in objective c?

1 Answers  

---

Does objective-c contain private strategies?

1 Answers  

---

What is a hash string?

1 Answers  

---

What is the point of closures?

1 Answers  

---

Explain when to use nsarray and nsmutablearray. Which one is faster and threadsafe?

1 Answers  

---

What is an example of category?

1 Answers  

---

What is difference between mutable and immutable?

1 Answers  

---

What is a nsstring?

1 Answers  

---

How do I create an objective c class in xcode?

1 Answers  

---

What’s the contrast between active, inactive, not-running, background and suspended execution states?

1 Answers  

---

Explain the way messaging works in objective-c?

1 Answers  

---