Join string array with separator “, ” and add “, and ” to join the last element in Swift

Question

I\'m messing around with parsing JSON with SwiftyJSON on a swift playground. My code is as follows:

import UIKit
import SwiftyJSON

var partyList: [String] =         


        

Answer 1

Since iOS 13.0+ / macOS 10.15+ Apple provides the ListFormatter. See also here for details.

Arrays can be formatted as easy as:

let elements = ["a", "b", "c"]
result = ListFormatter.localizedString(byJoining: elements)

As the function name suggests, you also get the localization for free.