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".

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 Box<[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 KeyBase for 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