What is difference between delegate and datasource in ios?
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Push notification working in ios?
Why do you generally create a weak reference when using self in a block?
Explain "private", "protected" and "public"?
What is difference between weak and strong in ios?
what are fetched properties? How do you create a fetched property?
What is nsfetchedresultscontroller? How do you turn on content monitoring?
Explain the difference between nil and nil?
Can my application have multiple models?
Who calls the dealloc strategy? Would we be able to implement dealloc in arc? In the event that indeed, what is the need to do that?
What is nsuserdefaults?
What is the difference between synchronous & asynchronous task in ios?
What is category and class extension?