Trait sp_core::Hasher

pub trait Hasher: Sync + Send {
    type Out: AsRef<[u8]> + AsMut<[u8]> + Default + MaybeDebug + Ord + PartialEq<Self::Out> + Eq + Hash + Send + Sync + Clone + Copy;
    type StdHasher: Sync + Send + Default + Hasher;

    const LENGTH: usize;

    // Required method
    fn hash(x: &[u8]) -> Self::Out;
}

Trait describing an object that can hash a slice of bytes. Used to abstract other types over the hashing algorithm. Defines a single hash method and an Out associated type with the necessary bounds.

Required Associated Types

type Out: AsRef<[u8]> + AsMut<[u8]> + Default + MaybeDebug + Ord + PartialEq<Self::Out> + Eq + Hash + Send + Sync + Clone + Copy

The output type of the Hasher

type StdHasher: Sync + Send + Default + Hasher

What to use to build HashMaps with this Hasher.

Required Associated Constants

const LENGTH: usize

The length in bytes of the Hasher output.

Required Methods

fn hash(x: &[u8]) -> Self::Out

Compute the hash of the provided slice of bytes returning the Out type of the Hasher.

Implementors

impl Hasher for Blake2Hasher

type Out = H256

type StdHasher = Hash256StdHasher

const LENGTH: usize = 32usize

impl Hasher for KeccakHasher

type Out = H256

type StdHasher = Hash256StdHasher

const LENGTH: usize = 32usize