Is the delegate for a CAAnimation retained in iOS operating system?
What are ios apps written in?
What are the different store migration options?
Explain what is iphone reference library?
What is iphone architecture?
What is datasource in ios?
Difference between categories and extensions?
Explain the usage of struct?
What is difference between static library and framework?
What is the maximum byte-size for a push notification to apple server?
Tell me the hierarchy of uibutton.
What is the difference between stack and heap?
What is nsmanagedobjectcontext? What are the different concurrency types? Explain each type.