Struct AddressHasherBuilder

pub struct AddressHasherBuilder { /* private fields */ }

A builder for faster, but less collision resistant hasher for addresses.

Initializes AddressHasher instances that use an 8-byte slice of the address as the hash value. Should not be used when collisions might be used to mount DOS attacks.

Using this results in about 4x faster lookups in a typical hashmap.

Trait Implementations

impl BuildHasher for AddressHasherBuilder

type Hasher = AddressHasher

Type of the hasher that will be created.

fn build_hasher(&self) -> Self::Hasher

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 AddressHasherBuilder

fn clone(&self) -> AddressHasherBuilder

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for AddressHasherBuilder

fn default() -> Self

Default construct the AddressHasherBuilder.

The position of the slice is determined initially through random draw and then by incrementing a thread-local This way each hashmap can be expected to use a slightly different slice. This is essentially the same mechanism as what is used by RandomState