What is block in ios swift?
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What is core data in ios?
What is array in ios?
What is the difference between weak and strong?
Difference between cocoa, cocoa touch and objective c?
Does ios supports multi-tasking functionality?
is code completion is active by default in iphone development?
Explain the difference between 'protocol' and 'delegate'?
How would you create your own custom view?
What is the difference between inheritance and category?
Assume that system is running low on memory. What can system do for suspended apps?
What is the use of controller object UIApplication?
What is libdispatch?