Which is easier android or ios development?
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Explain code signing in ios?
How many types of background modes supported in ios?
What are “strong” and “weak” references? Why are they important and how can they be used to help control memory management and avoid memory leaks?
What is ios image?
Explain the difference between NSOperationQueue concurrent and non-concurrent in iOS operating system?
What is nsuserdefaults?
Why core data is faster than sqlite?
Explain how to hide images in ios?
Define ipa?
What is the maximum byte-size for a push notification to apple server?
What is difference between synchronous and asynchronous in web request in iOS operating system?
What is meaning of 'copy' keyword?