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

Ingo Ngoyama
Ingo Ngoyama
4,882 Points
Posted by Ingo Ngoyama
Ingo Ngoyama
4,882 Points

My code works but it wont let me pass.

I have put in all the correct arguments and labels and my output is matches so why is my code not working

generics.swift 
func duplicate<T>( _ item: inout T, _ numberOfTimes: inout Int) -> [ T ]
{
    var anArray = [item]
    var counter = 0
        repeat{
        anArray.append(item)
        counter += 1
    } while counter < numberOfTimes
    return anArray
}

var a = 1
var b = 3

var myArray = duplicate(&a, numberOfTimes: &b)

2 Answers

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

Although there are multiple ways to complete this. Here is the way that I did. There are several things that you are including that do not need to be included

func duplicate<T>(item:T, numberOfTimes:Int) -> Array<T> {
    var newArray: [T] = []
    for _ in 0..<numberOfTimes {
        newArray.append(item)
    }
    return newArray
}
duplicate(item: 1, numberOfTimes: 4)
Christoph Eck
PLUS
Christoph Eck
Courses Plus Student 7,021 Points
Christoph Eck
Christoph Eck
Courses Plus Student 7,021 Points

Short and working

func duplicate<T>(item: T, numberOfTimes: Int) -> [T] {
    var ary = [T](repeating: item, count: numberOfTimes)
    return ary
}