Struct std::hash::SipHasher

pub struct SipHasher {
    // some fields omitted
}

An implementation of SipHash 2-4.

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

This is currently the default hashing function used by standard library (eg. collections::HashMap uses it by default).

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 hashtables 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.

Methods

impl SipHasher

fn new() -> SipHasher

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

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

Creates a SipHasher that is keyed off the provided keys.

Trait Implementations

impl Hasher for SipHasher

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

Writes some data into this Hasher

fn finish(&self) -> u64

Completes a round of hashing, producing the output hash generated.

fn write_u8(&mut self, i: u8)

Write a single u8 into this hasher

fn write_u16(&mut self, i: u16)

Write a single u16 into this hasher.

fn write_u32(&mut self, i: u32)

Write a single u32 into this hasher.

fn write_u64(&mut self, i: u64)

Write a single u64 into this hasher.

fn write_usize(&mut self, i: usize)

Write a single usize into this hasher.

fn write_i8(&mut self, i: i8)

Write a single i8 into this hasher.

fn write_i16(&mut self, i: i16)

Write a single i16 into this hasher.

fn write_i32(&mut self, i: i32)

Write a single i32 into this hasher.

fn write_i64(&mut self, i: i64)

Write a single i64 into this hasher.

fn write_isize(&mut self, i: isize)

Write a single isize into this hasher.

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 Default for SipHasher

fn default() -> SipHasher

Returns the "default value" for a type.

Derived Implementations

impl Debug for SipHasher

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.