[][src]Struct ahash::RandomState

pub struct RandomState { /* fields omitted */ }

Provides a Hasher factory. This is typically used (e.g. by [HashMap]) to create AHashers in order to hash the keys of the map. See build_hasher below.

Implementations

impl RandomState[src]

pub fn new() -> RandomState[src]

pub fn with_seeds(k0: u64, k1: u64) -> RandomState[src]

Allows for explicitly setting the seeds to used.

Trait Implementations

impl BuildHasher for RandomState[src]

type Hasher = AHasher

Type of the hasher that will be created.

fn build_hasher(&self) -> AHasher[src]

Constructs a new AHasher with keys based on compile time generated constants** and the location this object was constructed at in memory. This means that two different BuildHashers will will generate AHashers that will return different hashcodes, but Hashers created from the same BuildHasher will generate the same hashes for the same input data.

** - only if the compile-time-rng feature is enabled.

Examples

use ahash::{AHasher, RandomState};
use std::hash::{Hasher, BuildHasher};

let build_hasher = RandomState::new();
let mut hasher_1 = build_hasher.build_hasher();
let mut hasher_2 = build_hasher.build_hasher();

hasher_1.write_u32(1234);
hasher_2.write_u32(1234);

assert_eq!(hasher_1.finish(), hasher_2.finish());

let other_build_hasher = RandomState::new();
let mut different_hasher = other_build_hasher.build_hasher();
different_hasher.write_u32(1234);
assert_ne!(different_hasher.finish(), hasher_1.finish());

impl Clone for RandomState[src]

impl Default for RandomState[src]

Auto Trait Implementations

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T> ToOwned for T where
    T: Clone
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type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.