XQuery3.0: Partial function example

gistfile1.txt

xquery version "3.0";
declare function local:increase($nums as xs:integer*, $by as xs:integer) as xs:integer* {
    $nums ! (.  + $by)
};

let $numbers := (2,3,6,8,12,14)
let $increaseByThree := local:increase(?, 3)
let $increaseByFour := local:increase(?, 4)
return 
  <result>
    <test1>{$increaseByThree($numbers)}</test1>
    <test2>{$increaseByFour($numbers)}</test2>
  </result>

(:
**********************************************
XQuery output:
**********************************************
<result>
  <test1>5 6 9 11 15 17</test1>
  <test2>6 7 10 12 16 18</test2>
</result>
:)