What are ui elements and some common ways you can add them to your app?
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When to use nsmutablearray and when to use nsarray?
What is the meaning of 'strong'keyword?
Explain what is the stack of autorelease pools. How autorelease pool work under the hood?
What is 'notification'?
What is notification in iOS?
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Explain differentiate between release and pool drain?
Suppose I get a “blog returned invalid data” error message. What do I do?
What is delegate and protocol in ios?
What is category in ios?
How we can wait for some thread to finish before starting another?
Explain the difference between bounds and frame?
How many types of background modes supported in ios?