What is the difference between weak and strong?
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Explain the difference between stack and heap memory?
What is the difference between viewdidload and viewdidappear?
What's new with the ios 7 camera?
What language is ios written in?
What is the use of controller object UIApplication?
What is arc and how is it different from autorelease?
Explain usage of struct?
What is error in application in iphone?
What is queue in ios?
what are the controllers are available in objective C
Do you know which json framework is supported by ios?
What compilers apple using ?