Struct arber::Hash

pub struct Hash(_);

Generic hash type which should be compatible with most hashes used within the blockchain domain.

Implementations

impl Hash

pub const LEN: usize

32 byte hash

pub fn from_vec(v: &[u8]) -> Hash

Return a hash initialized from v.

At most, up to Hash::LEN bytes will be copied from v. If v has less than Hash::LEN bytes, the hash will be padded with 0’s from left to right.

pub fn from_hex(hex: &str) -> Result<Hash, Error>

Retrun a hash initialized from string hex.

An error is returned, if hex is not a well-formed hex string like "0xcafe".

Trait Implementations

impl AsRef<[u8]> for Hash

fn as_ref(&self) -> &[u8]

Performs the conversion.

impl Clone for Hash

fn clone(&self) -> Hash

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Hash

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Decode for Hash

fn decode<__CodecInputEdqy: Input>(
    __codec_input_edqy: &mut __CodecInputEdqy
) -> Result<Self, Error>

Attempt to deserialise the value from input.

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 Display for Hash

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Encode for Hash

fn encode_to<__CodecOutputEdqy: Output + ?Sized>(
    &self,
    __codec_dest_edqy: &mut __CodecOutputEdqy
)

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 size_hint(&self) -> usize

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

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl Hashable for Hash

fn hash(&self) -> Hash

Return the hash, without hashing again.

impl PartialEq<Hash> for Hash

fn eq(&self, other: &Hash) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Hash) -> bool

This method tests for !=.

impl Copy for Hash

impl EncodeLike<Hash> for Hash

impl StructuralPartialEq for Hash