Fizz Buzz in Swift

FizzBuzz.swift

import Cocoa

func fizzBuzz (number : Int) -> String {
    let (n,m) = (number % 3, number % 5)
    switch (n,m) {
    case (n,m) where n == 0 && m == 0:
        return "FizzBuzz"
    case (n,m) where n == 0:
        return "Fizz"
    case (n,m) where m == 0:
        return "Buzz"
    default:
        return number.description
    }
}

let numbers = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
numbers.map(fizzBuzz)