What are b-trees?
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What size is 1x and 2x?
What is core data in ios swift?
What is message forwarding?
Explain app bundle?
How can an operating system improve battery life while running an app?
What is arc and how is it different from autorelease?
What is the purpose of UIWindow object in iOS operating system?
What are the limits of accessibility ?
How does the runtime handle message passing? What is message forwarding?
How do I create a class in xcode?
Explain why delegates and notifications are different.
What is meaning of 'copy' keyword?