What is meaning of 'atomic' keyword?
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Can viewdidload be called multiple times?
Explain what is iphone reference library?
When an app is said to be in active state?
Will iphone 5s get ios 13?
What are transient properties?
how push notification works?
What is ios viewwillappear?
What is the extension of ios files?
What is messaging? How does the runtime handle message passing?
Does iOs supports multitasking?
Explain the difference between copy and retain?
Explain application sandboxing.