Function hash_string_modulo

nodedb-array/src/coord/string_hash.rs:32–40

Hash `s` into `[0, modulus)` via modulo. Used by tile-index bucketing where the extent isn't necessarily a power of two.

(s: &str, modulus: u64)

/// Hash `s` into `[0, modulus)` via modulo. Used by tile-index
/// bucketing where the extent isn't necessarily a power of two.
pub fn hash_string_modulo(s: &str, modulus: u64) -> u64 {
    let mut h = std::collections::hash_map::RandomState::new().build_hasher();
    h.write(s.as_bytes());
    if modulus <= 1 {
        0
    } else {
        h.finish() % modulus
    }
}

#[cfg(test)]
mod tests {