Struct LexicographicReverse 

pub struct LexicographicReverse<V: LexicographicEncoding>(/* private fields */);

A wrapper such that a.cmp(&b).reverse() == e(LexicographicReverse(a)).cmp(&e(LexicographicReverse(b))).

This allows systems which only allow iterating forwards to iterate backwards by inverting the direction of values via this derivative encoding.

Trait Implementations

impl<V: LexicographicEncoding> Decode for LexicographicReverse<V>

fn decode<I: Input>(input: &mut I) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<V: LexicographicEncoding> Encode for LexicographicReverse<V>

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<T: Output + ?Sized>(&self, dest: &mut T)

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<V: LexicographicEncoding> EncodeLike for LexicographicReverse<V>