Struct FingerprintBuilder 

pub struct FingerprintBuilder { /* private fields */ }

Streaming fingerprint builder.

Wraps a blake3::Hasher so callers can write canonical bytes into a hash incrementally without materialising them first.

Implementations

impl FingerprintBuilder

pub fn new() -> Self

Start a new builder.

pub fn update(self, data: &[u8]) -> Self

Feed bytes into the hash.

pub fn byte(self, byte: u8) -> Self

Feed a single byte into the hash. Convenient for tag bytes and discriminators.

pub fn length_prefixed_str(self, s: &str) -> Self

Feed a UTF-8 string preceded by a 4-byte little-endian length prefix.

pub fn u32_le(self, v: u32) -> Self

Feed a u32 as four little-endian bytes.

pub fn u64_le(self, v: u64) -> Self

Feed a u64 as eight little-endian bytes.

pub fn i64_le(self, v: i64) -> Self

Feed an i64 as eight little-endian bytes.

pub fn finish(self) -> Fingerprint

Finalise the hash.

Trait Implementations

impl Debug for FingerprintBuilder

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

Formats the value using the given formatter.

impl Default for FingerprintBuilder

fn default() -> FingerprintBuilder

Returns the “default value” for a type.