How many types of closures are there in swift?
Is swift thread safe?
What is subscript in swift?
What is mutating keyword in swift?
Is swift compiled or interpreted?
What is static function in swift?
What is extension in swift?
What is category in swift?
What are swift categories?
Does swift have a runtime?
What is the synonym of swift?
What is a static variable swift?
What is difference between if and guard in swift?
What is base class in swift?
What is swift nsarray?