Struct Hasher 

pub struct Hasher { /* private fields */ }

The hasher Fingerprint writes into: FNV-1a, 64-bit.

Deliberately not std::hash::Hasher. That trait’s implementations are free to change their output between Rust releases, which would turn a toolchain upgrade on one side of a connection into a stream of spurious mismatches. This one is pinned to the constants above and will not move.

It is not a cryptographic hash and is not meant to survive an adversary — it exists to catch accidental divergence.

Implementations

impl Hasher

pub fn new() -> Self

Starts a new hasher at the offset basis.

pub fn write(&mut self, bytes: &[u8])

Folds bytes into the hash.

pub fn write_u64(&mut self, value: u64)

Folds a whole sub-hash in, for combining nested fingerprints.

pub fn finish(&self) -> u64

The hash so far.

Trait Implementations

impl Clone for Hasher

fn clone(&self) -> Hasher

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Hasher

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Hasher

fn default() -> Self

Returns the “default value” for a type.