From the caller's side, what's the difference between func make() -> some Shape and func make() -> any Shape?
some is an opaque type: the compiler knows the one concrete type behind it. any is an existential that can hold any Shape, so the caller doesn't know what's inside.
SwiftShort answerAdvanced
You have an Iterator protocol with getNext() and hasNext(), and you want to change it…
#any #generic
SwiftShort answerBasics
What can Any, AnyObject, and NSObject each hold?
#any #existential
SwiftMultiple choiceExpert
What does this code print? …
#dispatch
SwiftShort answerAdvanced
In Swift, which method calls use static, table, and message dispatch?
#dispatch