import Foundation
class DateHandler {
    private static let stringOffset : Int = 10
    static var todaysDate: String {
        return formatDateString(date: Date())
    }
    static var tomorrowDate: String {
        guard let tommorrowDate = Calendar.current.date(byAdding: .day,value:1, to: Date()) else {return ""}
        return formatDateString(date: tommorrowDate)
    }
    private static func formatDateString(date:Date)->String {
        let dateString = String(describing:date)
        let endIndex = dateString.index(dateString.startIndex, offsetBy:self.stringOffset)
        return dateString.substring(to:endIndex)
    }
}
i am doin weather app its giveing me warning tring slicing subscript with a 'partial range upto' operator.
 
    