MarkLogic Server 11.0 Product Documentation

sem:isNumeric

sem:isNumeric(
   $value as xs:anyAtomicType
) as xs:boolean

Summary

Returns true if the argument is a valid numeric RDF literal. This XQuery function backs up the SPARQL isNumeric() function.

This function is a built-in.

Example

sem:isNumeric(51)
=>
true