- sxml:ns-id->uri obj namespace-idprocedure
Returns the URI for the (first) namespace matching the given namespace-id, or #f if no namespace matches the given namespace-id.
(sxml:ns-id->uri '(c:part (@) (@@ (*NAMESPACES* (c "http://www.cars.com/xml")))) 'c) => "http://www.cars.com/xml"