A RESTful browser for eXist Java-Based Function Modules

http://www.w3.org/2005/xpath-functions
A module with the XQuery/XPath Core Library Functions
exists
exists($items as item()*) xs:boolean
Returns true if the argument $items is not the empty sequence, false otherwise.
$itemsThe item sequence
Returns true() if not the empty-sequence, false() otherwise
Return to list of all modules