Trait KeyBase

pub trait KeyBase {
    // Required methods
    fn len(&self) -> usize;
    fn hash<H: Hasher>(&self, state: &mut H);

    // Provided method
    fn is_empty(&self) -> bool { ... }
}

A trait for keys that can be used for hashing.

Required Methods

fn len(&self) -> usize

Returns the length of the key in bytes.

fn hash<H: Hasher>(&self, state: &mut H)

Hashes the key. It should not include the structure of the key, only the data. E.g. ([1, 2], [3, 4]) should hash the same as [1, 2, 3, 4].

Provided Methods

fn is_empty(&self) -> bool

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl KeyBase for &[u8]

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn hash<H: Hasher>(&self, state: &mut H)

impl KeyBase for u8

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn hash<H: Hasher>(&self, state: &mut H)

impl KeyBase for Vec<u8>

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn hash<H: Hasher>(&self, state: &mut H)

impl<A: KeyBase, B: KeyBase> KeyBase for (A, B)

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn hash<H: Hasher>(&self, state: &mut H)

impl<T: KeyBase> KeyBase for &T

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn hash<H: Hasher>(&self, state: &mut H)

impl<const N: usize> KeyBase for [u8; N]

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn hash<H: Hasher>(&self, state: &mut H)

Implementors