What is datasource in ios swift?
Explain keywords alloc and new?
What is the difference between atomic and nonatomic properties?
How to delete images in ios?
Are document objects required for an application? What does they offer?
What is the difference between atomic and non-atomic properties? Which is the default for synthesized properties? When would you use one over the other?
What are the important delegate methods of nsxml parser?
What is id in ios?
Explain the features is ios 6?
What performance issues can you face when using coredata?
Difference between categories and extensions?
What is ios closure?
What is push notification?