Struct std::collections::hash_map::RandomState

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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 BuildHasher for RandomState[+]

[+] Show hidden undocumented items

type Hasher = DefaultHasher

Type of the hasher that will be created.

fn build_hasher(&self) -> DefaultHasher[−]

Creates a new hasher.

impl Debug for RandomState[+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl Clone for RandomState[+]

[+] Show hidden undocumented items

fn clone(&self) -> RandomState[−]

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Default for RandomState[+]

fn default() -> RandomState[−]

Constructs a new RandomState.