Explain how the push notification works in iOS operating system?
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What is difference between delegate and datasource in ios?
What is UIApplication?
What is a difference between stack and heap memory?
Which programming language is used in ios?
What framework is used to construct application's ios user interface?
What compilers apple using ?
What is core data?
Why core data is faster than sqlite?
Explain the characteristics of ios?
Explain retain counts in iOS operating system?
what’s accessibilityhint?
Can you please explain the difference between frame and bounds?