How should errors be handled in swift?
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Can you explain completion handler?
What is forced unwrapping?
What is operation queue in swift?
What are floating point numbers? How many types of floating number are there?
List the features of swift programming?
How to add an element into an array?
Explain some common features of protocols & superclasses.
What is the use of double question mark “??” In swift?
What is the purpose of swift?
What is asynchronous in swift?
What are the new feature in swift 4.0?
How you define variables in swift language?