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iOS Generics in Swift Generic Functions, Parameters and Constraints Generic Functions

Nan Wang
Nan Wang
10,036 Points

Generic in Swift 3, first Challenge. i still don't know how to solve this

How to solve this challenge?

func duplicate<T>(_ item: inout Int, _ numberOfTimes: inout Int) -> <T> {

2 Answers

Hi Nan!

This should work:

func duplicate<T>(item: T, numberOfTimes: Int) -> [T] {
    var array: [T] = []
    for _ in 1...numberOfTimes {
    return array
Kapil Soni
Kapil Soni
2,612 Points
func duplicate<T> (item: T, numberOfTimes: Int) -> [T]  {
    var someArray  = [item]
    for _ in 1..<numberOfTimes {
    return someArray as! [T]

duplicate(item: 2, numberOfTimes: 3)

this worked