Struct SeedableRandomState 

pub struct SeedableRandomState { /* private fields */ }

A BuildHasher for fast::FoldHasher that is randomly initialized by default, but can also be initialized with a specific seed.

This can be useful for e.g. testing, but the downside is that this type has a size of 16 bytes rather than the 8 bytes RandomState is.

Implementations

impl SeedableRandomState

pub fn random() -> Self

Generates a random SeedableRandomState, similar to RandomState.

pub fn fixed() -> Self

Generates a fixed SeedableRandomState, similar to FixedState.

pub fn with_seed(per_hasher_seed: u64, shared_seed: &'static SharedSeed) -> Self

Generates a SeedableRandomState with the given per-hasher seed and SharedSeed.

Trait Implementations

impl BuildHasher for SeedableRandomState

type Hasher = FoldHasher

Type of the hasher that will be created.

fn build_hasher(&self) -> FoldHasher

Creates a new hasher.

fn hash_one<T>(&self, x: T) -> u64

where T: Hash, Self: Sized, Self::Hasher: Hasher,

Calculates the hash of a single value.

impl Clone for SeedableRandomState

fn clone(&self) -> SeedableRandomState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SeedableRandomState

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

Formats the value using the given formatter.

impl Default for SeedableRandomState

fn default() -> Self

Returns the “default value” for a type.

impl Copy for SeedableRandomState

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes