How many types of closures are there in swift?
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What is a deinitializer in swift?
How proficient are you in objective-c and swift? Can you briefly describe their differences?
What is observer in swift?
What are the various ways to unwrap an optional in swift?
Is swift object oriented programming?
What are the collection types available in swift?
How to pass the data between view controllers?
What is cocoa swift?
What is property observer in swift?
Is swift memory safe?
How can you declare a variable in swift?
Mention what is the difference between Swift and ‘Objective-C’ language?