What is the difference between copy and retain?
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What is the difference between atomic and nonatomic properties? Which is the default for synthesized properties?
Explain your process for tracing and fixing a memory leak
How to debug a crash in the auto-release pool?
Explain alamofire benefits
What is bundle id?
What is delegate method?
Which api would you use to write test scripts to exercise the application’s ui elements?
What are the location services?
What is xcode used for?
What is nsmanagedobjectcontext?
What is use of nsoperation? How nsoperationque works?
How do I get ios 13?