Function geohashrust::neighbor

pub fn neighbor(hash: &str, direction: (i8, i8)) -> String

Get the neighbor of GeoHash on specific direction

Example

assert_eq!(geohashrust::neighbor("wtw3s", (-1, -1)), "wtw37");
assert_eq!(geohashrust::neighbor("wtw3sjj", (1, -1)), "wtw3sjk");