Struct PrefixHasher 

pub struct PrefixHasher { /* private fields */ }

Incremental SHA-256 hasher over emitted row lines, hex-encoded on finalize. The wire contract is that the server hashes the exact byte sequence of each row line (without trailing newline) in the order the rows are emitted; the client stores the resulting digest from the end envelope and replays it on resume.

Implementations

impl PrefixHasher

pub fn new() -> PrefixHasher

pub fn update(&mut self, line: &[u8])

pub fn rows(&self) -> u64

pub fn finalize_hex(self) -> String

Hex-encoded digest of everything fed so far. Consumes the hasher (a PrefixHasher is single-use).

Trait Implementations

impl Debug for PrefixHasher

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

Formats the value using the given formatter.

impl Default for PrefixHasher

fn default() -> PrefixHasher

Returns the “default value” for a type.