Function libh3::h3_is_valid

pub fn h3_is_valid(h3: H3Index) -> bool

Determine if H3 index is valid

use libh3::{GeoCoord, degs_to_rads, geo_to_h3, h3_is_valid};
let coords = GeoCoord {
  lat: degs_to_rads(40.689167),
  lon: degs_to_rads(-74.044444),
};

let v = geo_to_h3(&coords, 10);
assert_eq!(h3_is_valid(v.unwrap()),true);