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Swift When we run the above program using playground, we get the following result: res is: 20 res is: 30 res is: 50

Protocol Composition Swift allows multiple protocols to be called at once with the help of protocol composition.

Syntax protocol<SomeProtocol, AnotherProtocol>

Example protocol stname { var name: String { get } }

protocol stage { var age: Int { get } }

struct Person: stname, stage { var name: String var age: Int }

func print(celebrator: protocol<stname, stage>) { println("\( is \(celebrator.age) years old") }

let studname = Person(name: "Priya", age: 21) print(studname)

let stud = Person(name: "Rehan", age: 29) print(stud)


​Quick is really a powerful and intuitive programming language for macOS, iOS, watchOS and tvO...  


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