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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?
Define 'copy' keyword?
What are the viewcontroller lifecycle in ios?
How do I exit safe mode on my iphone?
Explain parent-child context setup?
How can we prevent ios 8 app’s streaming video media from being captured by quicktime player on yosemite during screen recording?
what are all instruments available in Xcode?
What is bridging header in ios?
What is delegate?
what is the use of PO command in Xcode?
Do you know what are layer objects and what do they represent?
Tell me what is fast enumeration?
Does ios have garbage collection?
What compilers apple using ?
What is difference between 'protocol' and 'delegate'?
