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what’s accessibilityhint?
What is difference between nsnotification and delegate?
How does the runtime handle message passing? What is message forwarding?
What are “strong” and “weak” references? Why are they important and how can they be used to help control memory management and avoid memory leaks?
Why do we override drawrect: method?
What is automatic reference counting (arc)?
In which language ios is written?
What is the first responder and responder chain?
Explain what is the stack of autorelease pools. How autorelease pool work under the hood?
Is the delegate for a CAAnimation retained in iOS operating system?
What is meant by delegate in ios?
What is categories in iOS?
How to use core data objects between two threads?
What is foundation framework in ios?
what are fetched properties?
