Turkish Identify Number Control in Swift

check-tc-identify.swift

import Foundation

let tcNumber = "{TC_NUMBER}}"
let lastDigitOfTCNumber = "\(tcNumber)".suffix(1)
let totalOfNumbers = tcNumber.prefix(10).reduce(0) { Int($0) + (Int("\($1)") ?? 0) }
let lastDigitOfTotalNumber = "\(totalOfNumbers)".suffix(1)

if
    tcNumber.count == 11,
    lastDigitOfTCNumber == lastDigitOfTotalNumber {
    print("Right!")
} else {
    print("Wrong!")
}