Struct HashFunction 

pub struct HashFunction { /* private fields */ }

A hash function with configurable algorithm and seed

Implementations

impl HashFunction

pub fn new() -> Self

Create a new hash function with the default algorithm

Examples

use yimi_rutool::algorithms::hash_functions::{HashFunction, Hasher};

let hash_fn = HashFunction::new();
let hash_value = hash_fn.hash("hello");
assert!(hash_value > 0);

pub fn with_algorithm(algorithm: HashAlgorithm) -> Self

Create a new hash function with a specific algorithm

Arguments

• algorithm - The hash algorithm to use

Examples

use yimi_rutool::algorithms::hash_functions::{HashFunction, HashAlgorithm, Hasher};

let hash_fn = HashFunction::with_algorithm(HashAlgorithm::Murmur3);
let hash_value = hash_fn.hash("hello");
assert!(hash_value > 0);

pub fn with_seed(algorithm: HashAlgorithm, seed: u64) -> Self

Create a new hash function with a specific algorithm and seed

Arguments

• algorithm - The hash algorithm to use
• seed - Seed value for the hash function

Examples

use yimi_rutool::algorithms::hash_functions::{HashFunction, HashAlgorithm, Hasher};

let hash_fn = HashFunction::with_seed(HashAlgorithm::Fnv1a, 12345);
let hash_value = hash_fn.hash("hello");
assert!(hash_value > 0);

pub fn generate_functions(count: usize) -> Vec<HashFunction>

Generate multiple hash functions with different seeds

This is useful for bloom filters that need multiple independent hash functions.

Arguments

• count - Number of hash functions to generate

Examples

use yimi_rutool::algorithms::hash_functions::HashFunction;

let hash_functions = HashFunction::generate_functions(5);
assert_eq!(hash_functions.len(), 5);

pub fn algorithm(&self) -> HashAlgorithm

Get the algorithm used by this hash function

pub fn seed(&self) -> u64

Get the seed used by this hash function

Trait Implementations

impl Clone for HashFunction

fn clone(&self) -> HashFunction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HashFunction

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

Formats the value using the given formatter.

impl Default for HashFunction

fn default() -> Self

Returns the “default value” for a type.

impl Hasher for HashFunction

fn hash<T: Hash + ?Sized>(&self, item: &T) -> usize

Compute hash value for the given item