RDF.Literal.has_datatype-question-mark

You're seeing just the function has_datatype-question-mark, go back to RDF.Literal module for more information.

Specs

has_datatype?(t()) :: boolean()

Returns if a literal is a datatyped literal.

For historical reasons, this excludes xsd:string and rdf:langString.

see http://www.w3.org/TR/rdf-concepts/#dfn-typed-literal