What is iOS?2 1573
What's fast enumeration?2 1542
What are the differences between categories and extensions?1 1233
What is a singleton?1 1125
Name and explain the iOS app states.1 1231
What are the memory management rules?1 1209
Name the memory management rules and their related methods.1 1267
Explain why delegates and notifications are different.1 1141
What is lazy loading?1 1263
Explain shallow copying and depth copying.1 1098
What is a struct?1 1209
Is the object retained if I call performSelector:withObject:afterDelay:?1 1615
Where do you test the developed apps if you do not have the device?1 1063
Does iOs supports multitasking?1 1145
What does sn mean in a text message?
Why do all model object attributes get marked with @dynamic and not synthesised?
What is the meaning of 'synthesize' keyword?
Why core data is faster than sqlite?
Which object is create by uiapplicationmain function at app launch time?
Why we use delegate in ios?
what are the new features in Xcode 6?
What is mapping model?
What is difference between core data and sqlite in ios?
What is dynamic dispatch ios?
Can you please explain the difference between frame and bounds?
what are fetched properties? How do you create a fetched property?
How to parse xml?
What are the features of ios?