Struct std::collections::hash_map::RandomState

[+] Show type declaration

pub struct RandomState { /* fields omitted */ }

[−] Expand description

RandomState is the default state for HashMap types.

A particular instance RandomState will create the same instances of Hasher, but the hashers created by two different RandomState instances are unlikely to produce the same result for the same values.

Examples

use std::collections::HashMap;
use std::collections::hash_map::RandomState;

let s = RandomState::new();
let mut map = HashMap::with_hasher(s);
map.insert(1, 2);

Methods

impl RandomState

[−]

pub fn new() -> RandomState

[−]

Constructs a new RandomState that is initialized with random keys.

Examples

use std::collections::hash_map::RandomState;

let s = RandomState::new();

Trait Implementations

impl Clone for RandomState

[+]

fn clone(&self) -> RandomState

[−]

Returns a copy of the value.

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

[−]

Performs copy-assignment from source.

impl BuildHasher for RandomState

[+]

type Hasher = DefaultHasher

Type of the hasher that will be created.

fn build_hasher(&self) -> DefaultHasher

[−]

Creates a new hasher.

impl Default for RandomState

[+]

fn default() -> RandomState

[−]

Constructs a new RandomState.

impl Debug for RandomState

[+]

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

[−]

Formats the value using the given formatter.