Explain app's state transitions when it gets launched?
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What is automatic reference counting (arc)?
What is datasource in ios swift?
Compare and contrast the different ways of achieving concurrency in os x and ios.
Explain difference between release and autorelease?
What are transient properties?
Differentiate between release and pool drain?
How to use core data objects between two threads?
Difference between coredata & sqlite?
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Functionality of accelerometer of an iphone
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Explain retain counts