What is the ? In swift?
What is @synthesize in objective-c ?
What’s the difference between an “app id” and a “bundle id” and what is each used for?
What is a category and when is it used?
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?
What are the limits of accessibility ?
Explain the characteristics of ios?
Explain place holder constraint
Explain differences between foundation and corefoundation
What is auto-layout?
What is the difference between let and var in swift?
What is the difference between atomic and non-atomic properties? Which is the default for synthesized properties? When would you use one over the other?
Explain the difference between copy and retain?
What is the difference between synchronous & asynchronous task ?
Why do you generally create a weak reference when using self in a block?
