Name
empty — Returns true if given argument is an empty sequence, false if it is any single value or nonempty sequence.
Synopsis
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.
Return Types
Boolean
Errors
This function never returns any errors
Examples
Example24.583.
if(empty(//table),'There are no tables in context node','There is at least one table')