//github.com/ShawnMoore/XMLParsing
import XMLParsing 

let nums = [2, 3, 5, 7, 11]

let encoder = XMLEncoder()
let data_b = try! encoder
    .encode(nums, withRootKey: "nums")
let data_s = String(data: data_b,
    encoding: String.Encoding.utf8)
//<nums>
//    <nums>2</nums>
//    <nums>3</nums>
//    <nums>5</nums>
//    <nums>7</nums>
//    <nums>11</nums>
//</nums>

print("data_s is", data_s!)