Function dart_sys::Dart_IsNullableType

pub unsafe extern "C" fn Dart_IsNullableType(
    type_: Dart_Handle,
    result: *mut bool
) -> Dart_Handle

A type’s nullability.

\param type A Dart type. \param result An out parameter containing the result of the check. True if the type is of the specified nullability, false otherwise.

\return Returns an error handle if type is not of type Type.