Function is_valid 

pub fn is_valid<G>(geometry: &G) -> Result<(), ValidityFailure>
where
    G: Geometry,
    G::Kind: ValidityStrategyForKind,
    <G::Kind as ValidityStrategyForKind>::S: ValidityStrategy<G>,

Validate an areal geometry through its public geometry-kind tag.

Mirrors boost::geometry::is_valid from boost/geometry/algorithms/detail/is_valid/interface.hpp:155-202. Rings, polygons, and multi-polygons use their corresponding validators; unsupported kinds fail at compile time instead of returning an uninformative runtime value.

Errors

Returns the first ValidityFailure detected by the selected areal validator.