For loop shortcut in swift

    //the long version
    for var i =1; i < 10;  i++ {
    println(i)
    }
     
    //array loop
    var arr = [6, 3, 2, 7]
    for x in arr {
    printlin(x)
    }
    //get index location in the loop, x is the value
    for (index, x) in eumerate(arr) {
    arr[index] = x + 1
    }
    println(arr)
     
    //the short version