Trait QueryKey

pub trait QueryKey: KeyBase {
    // Required method
    fn cmp(&self, key: &[u8]) -> Ordering;
}

A trait for keys that can be used to query the database. They need to allow hashing and comparison with a byte slice (total order).

Required Methods

fn cmp(&self, key: &[u8]) -> Ordering

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 QueryKey for &[u8]

fn cmp(&self, key: &[u8]) -> Ordering

impl QueryKey for u8

fn cmp(&self, key: &[u8]) -> Ordering

impl QueryKey for Vec<u8>

fn cmp(&self, key: &[u8]) -> Ordering

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

fn cmp(&self, key: &[u8]) -> Ordering

impl<T: QueryKey> QueryKey for &T

fn cmp(&self, key: &[u8]) -> Ordering

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

fn cmp(&self, key: &[u8]) -> Ordering

Implementors