What size is 1x and 2x?
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What NSAutorelease pool
How can we achieve singleton pattern in iOS?
How are non-atomic and atomic properties different? Which one is the default property for synthesized properties?
Which framework delivers event to custom object when app is in foreground?
What is difference between synchronous and asynchronous in web request in iOS operating system?
Different types of persistent stores? Which all types can we have on ios?
How is it possible to improve battery life during execution of an application?
Did you used CLRegion? How its working?
What is the 'interface' and 'implementation'?
How to download something from the internet?
What are ios functions?
What do you know about the ios kernel?