Why do we use synchronized ?
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What is inactive state in ios?
Why do you generally create a weak reference when using self in a block?
If any app can run in the background, what about battery life?
What is singleton design pattern in ios?
what is Xcode command line tools package?
What is completion handler in ios?
When to use nsmutablearray and when to use nsarray?
Explain the difference between frame and bounds?
DB updation when app new version comes ?
how push notification works?
What is view object in iOS operating system?
What is cocoa framework in ios?