Function libh3::geo_to_h3

pub fn geo_to_h3(
    coord: &GeoCoord, 
    resolution: Resolution
) -> Result<H3Index, ()>

Convert a GeoCoord to a H3 index.

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

let v = geo_to_h3(&coords, 10);
assert_eq!(v.unwrap(), 0x8a2a1072b59ffff);