Value of type 'String' has no member 'stringByTrimmingCharactersInSet'

Question

After converting my project to swift 3, I get the following Value of type \'String\' has no member \'stringByTrimmingCharactersInSet\' error on the first line w

Answer 1

And for an Int and Float how can I code it ?

    private var currentTotal_passengers: Int = 0 {
    didSet {
        currentTotal_passengers = currentTotal_passengers.trimmingCharacters(in: CharacterSet .whitespacesAndNewlines)
    }
}