What are the features of iphone 3gs?
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What widgets can not do ?
Is it possible to write a program without using nib file
Why do all model object attributes get marked with @dynamic and not synthesised?
Assume that an app is not in foreground but is still executing code. In which state will it be in?
What is message forwarding?
What persistent storage used in mobile apps - ios?
what are the new features in Xcode 6?
Is ios 9 still supported by apple?
What happens when you invoke a method on a nil pointer?
What is the difference between atomic and nonatomic properties? Which is the default for synthesized properties?
Explain me what is fast enumeration?
What is category and class extension? How these differ?