empty function
The fn:empty function indicates whether an argument is an empty sequence.
Syntax
- item
- An expression of any data type, or the empty sequence.
Returned value
The returned value is true if item is the empty sequence. Otherwise, the returned value is false.
Example
The following example uses the empty function to determine whether the sequence in variable $seq is the empty sequence.
let $seq := (5, 10)
return fn:empty($seq)The returned value is false.