How nsoperationque works?
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Why do all model object attributes get marked with @dynamic and not synthesised? What does @dynamic mean?
Does ios have garbage collection?
What are the different store migration options? When are they used? How do they work? What is mapping model?
How can mobile application errors be prevented?
What ios version onwards arc can be used?
What’s the difference between mkannotation and mkpointannotation?
What does exc_bad_access mean?
Will the new design mean I have to completely relearn how to use my phone?
What is an NSOperationQueue and how/would you use it in iOS operating system?
what is Xcode?
What is use of uiapplication class?
Who calls the main function of you app during the app launch cycle?