empty
Returns true if given argument is an empty sequence, false if it is any single value or nonempty sequence.
boolean empty
(
seq any);
Description
Returns true if given argument is an empty sequence, false if it is any single value or nonempty sequence.
Parameters
seq – Sequence of values to be checked.
Errors
This function never returns any errors
Examples
if(empty(//table),'There are no tables in context node','There is at least one table')