Pp. 137 (no. 137)
This code sample is adapted from Clifford B. Anderson and Joseph C. Wicentowski, XQuery for Humanists (College Station: Texas A&M University Press, 2020), 137. Download this code sample in its raw form. View the source on GitHub.
declare function local:find-string($test as xs:string?) as xs:string? {
if ($test) then
"I found a string"
else
()
};
local:find-string("test")