What is abstract class in ios?
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Explain the difference between bounds and frame?
what are the source items used by Xcode?
Which is the default for synthesized properties?
What is nsmanagedobjectcontext? What are the different concurrency types? Explain them.
What is 1x 2x and 3x in ios?
Difference between retain and assign ?
What is delegate in ios with example?
What are the different store migration options? When are they used?
What is difference between weak and strong in ios?
How to handle concurrency problems in core data?
How does the runtime handle message passing? What is message forwarding?
What is the difference between 'assign' and 'retain' keyword?