Struct std::hash::SipHasher

pub struct SipHasher(_);

👎 Deprecated since 1.13.0:

use std::collections::hash_map::DefaultHasher instead

An implementation of SipHash 2-4.

See: https://131002.net/siphash/

SipHash is a general-purpose hashing function: it runs at a good speed (competitive with Spooky and City) and permits strong keyed hashing. This lets you key your hash tables from a strong RNG, such as rand::os::OsRng.

Although the SipHash algorithm is considered to be generally strong, it is not intended for cryptographic purposes. As such, all cryptographic uses of this implementation are strongly discouraged.

Implementations

impl SipHasher

pub fn new() -> SipHasher

👎 Deprecated since 1.13.0:

use std::collections::hash_map::DefaultHasher instead

Creates a new SipHasher with the two initial keys set to 0.

pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher

👎 Deprecated since 1.13.0:

use std::collections::hash_map::DefaultHasher instead

Creates a SipHasher that is keyed off the provided keys.

Trait Implementations

impl Clone for SipHasher

fn clone(&self) -> SipHasher

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SipHasher

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

Formats the value using the given formatter.

impl Default for SipHasher

fn default() -> SipHasher

Returns the “default value” for a type.

impl Hasher for SipHasher

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

Writes some data into this Hasher.

fn write_str(&mut self, s: &str)

🔬 This is a nightly-only experimental API. (hasher_prefixfree_extras #96762)

Writes a single str into this hasher.

fn finish(&self) -> u64

Returns the hash value for the values written so far.

fn write_u8(&mut self, i: u8)

Writes a single u8 into this hasher.

fn write_u16(&mut self, i: u16)

Writes a single u16 into this hasher.

fn write_u32(&mut self, i: u32)

Writes a single u32 into this hasher.

fn write_u64(&mut self, i: u64)

Writes a single u64 into this hasher.

fn write_u128(&mut self, i: u128)

Writes a single u128 into this hasher.

fn write_usize(&mut self, i: usize)

Writes a single usize into this hasher.

fn write_i8(&mut self, i: i8)

Writes a single i8 into this hasher.

fn write_i16(&mut self, i: i16)

Writes a single i16 into this hasher.

fn write_i32(&mut self, i: i32)

Writes a single i32 into this hasher.

fn write_i64(&mut self, i: i64)

Writes a single i64 into this hasher.

fn write_i128(&mut self, i: i128)

Writes a single i128 into this hasher.

fn write_isize(&mut self, i: isize)

Writes a single isize into this hasher.

fn write_length_prefix(&mut self, len: usize)

🔬 This is a nightly-only experimental API. (hasher_prefixfree_extras #96762)

Writes a length prefix into this hasher, as part of being prefix-free.