Trait sp_core::Hasher

pub trait Hasher: Sync + Send {
    type Out: AsRef<[u8]> + AsMut<[u8]> + Default + MaybeDebug + Ord + PartialEq + 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 + 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.

Object Safety

This trait is not object safe.

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