Trait LexicographicEncoding 

pub trait LexicographicEncoding: Ord + FullCodec {
    type Encoding: AsMut<[u8]> + Ord + FullCodec;

    // Required methods
    fn lexicographic_encode(&self) -> Self::Encoding;
    fn lexicographic_decode(encoding: Self::Encoding) -> Self;
}

A trait to obtain an encoding whose lexicographic order corresponds to the value’s.

Required Associated Types

type Encoding: AsMut<[u8]> + Ord + FullCodec

The representation of the encoding.

This SHOULD be [u8; N] or similar.

Required Methods

fn lexicographic_encode(&self) -> Self::Encoding

Encode such that cmp(e(A), e(B)) == cmp(A, B).

fn lexicographic_decode(encoding: Self::Encoding) -> Self

Decode such that d(e(A)) == A.

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 LexicographicEncoding for u8

type Encoding = [u8; 1]

fn lexicographic_encode(&self) -> Self::Encoding

fn lexicographic_decode(encoding: Self::Encoding) -> Self

impl LexicographicEncoding for u16

type Encoding = [u8; 2]

fn lexicographic_encode(&self) -> Self::Encoding

fn lexicographic_decode(encoding: Self::Encoding) -> Self

impl LexicographicEncoding for u32

type Encoding = [u8; 4]

fn lexicographic_encode(&self) -> Self::Encoding

fn lexicographic_decode(encoding: Self::Encoding) -> Self

impl LexicographicEncoding for u64

type Encoding = [u8; 8]

fn lexicographic_encode(&self) -> Self::Encoding

fn lexicographic_decode(encoding: Self::Encoding) -> Self

impl LexicographicEncoding for u128

type Encoding = [u8; 16]

fn lexicographic_encode(&self) -> Self::Encoding

fn lexicographic_decode(encoding: Self::Encoding) -> Self

Implementors