What is nsuserdefaults? What type of data can we store there?
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Define 'copy' keyword?
. Why an app on iOS device behaves differently when running in foreground than in background?
Explain the application lifecycle in ios?
What is Delegation in iOS?
What is ios application?
What is nsoperation and nsoperationqueue?
How to edit iphone code
What do you know about the ios kernel?
What is arc ? How it works?
How does the runtime handle message passing? What is message forwarding?
What is difference between category and extension in ios?
An app is loaded into memory but is not executing any code. In which state will be in?