sem:langMatches

sem:langMatches(
   $lang-tag as xs:string,
   $lang-range as xs:string
) as xs:boolean

Summary

Returns true if $lang-tag matches $lang-range according to the basic filtering scheme defined in RFC4647. This XQuery function backs up the SPARQL langMatches() function.

This function is a built-in.

Example

let $triple := sem:triple(sem:iri("subject"), sem:iri("predicate"), "object")
return
sem:langMatches(sem:triple-subject($triple), "fr")
=>
false