Which are the app’s state transitions when it is launched?
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What is thread safe?
. Why an app on iOS device behaves differently when running in foreground than in background?
How you will store user info (username, password or token) securely in ios?
What is abstract class in ios?
What is dispatch queue in ios swift?
Explain difference between sax parser and dom parser?
How to animate view with constraint?
What is the difference between copy and retain?
What is messaging? What is message forwarding?
Define 'retain' keyword?
Where do you test the developed apps if you do not have the device?
Explain the working of manual memory management?