SeedableRandomState

reth_evm::revm::primitives::map::foldhash::fast

Struct SeedableRandomState 

pub struct SeedableRandomState { /* private fields */ }
Expand description

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.

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impl SeedableRandomState

pub fn random() -> SeedableRandomState

Generates a random SeedableRandomState, similar to RandomState.

pub fn fixed() -> SeedableRandomState

Generates a fixed SeedableRandomState, similar to FixedState.

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

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

Trait Implementations§

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impl BuildHasher for SeedableRandomState

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type Hasher = FoldHasher

Type of the hasher that will be created.
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fn build_hasher(&self) -> FoldHasher

Creates a new hasher. Read more
1.71.0 · Source§

fn hash_one<T>(&self, x: T) -> u64
where T: Hash, Self: Sized, Self::Hasher: Hasher,

Calculates the hash of a single value. Read more
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impl Clone for SeedableRandomState

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fn clone(&self) -> SeedableRandomState

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for SeedableRandomState

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

Formats the value using the given formatter. Read more
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impl Default for SeedableRandomState

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fn default() -> SeedableRandomState

Returns the “default value” for a type. Read more
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impl Copy for SeedableRandomState

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🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
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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