Struct H64 

#[repr(C)]
pub struct H64(pub [u8; 8]);

Tuple Fields

0: [u8; 8]

Implementations

impl H64

pub const fn repeat_byte(byte: u8) -> H64

Returns a new fixed hash where all bits are set to the given byte.

pub const fn zero() -> H64

Returns a new zero-initialized fixed hash.

pub const fn len_bytes() -> usize

Returns the size of this hash in bytes.

pub fn as_bytes(&self) -> &[u8]

Extracts a byte slice containing the entire fixed hash.

pub fn as_bytes_mut(&mut self) -> &mut [u8]

Extracts a mutable byte slice containing the entire fixed hash.

pub const fn as_fixed_bytes(&self) -> &[u8; 8]

Extracts a reference to the byte array containing the entire fixed hash.

pub fn as_fixed_bytes_mut(&mut self) -> &mut [u8; 8]

Extracts a reference to the byte array containing the entire fixed hash.

pub const fn to_fixed_bytes(self) -> [u8; 8]

Returns the inner bytes array.

pub fn as_ptr(&self) -> *const u8

Returns a constant raw pointer to the value.

pub fn as_mut_ptr(&mut self) -> *mut u8

Returns a mutable raw pointer to the value.

pub fn assign_from_slice(&mut self, src: &[u8])

Assign the bytes from the byte slice src to self.

Note

The given bytes are interpreted in big endian order.

Panics

If the length of src and the number of bytes in self do not match.

pub fn from_slice(src: &[u8]) -> H64

Create a new fixed-hash from the given slice src.

Note

The given bytes are interpreted in big endian order.

Panics

If the length of src and the number of bytes in Self do not match.

pub fn covers(&self, b: &H64) -> bool

Returns true if all bits set in b are also set in self.

pub fn is_zero(&self) -> bool

Returns true if no bits are set.

impl H64

Utilities using the byteorder crate.

pub fn to_low_u64_be(&self) -> u64

Returns the lowest 8 bytes interpreted as big-endian.

Note

For hash type with less than 8 bytes the missing bytes are interpreted as being zero.

pub fn to_low_u64_le(&self) -> u64

Returns the lowest 8 bytes interpreted as little-endian.

Note

For hash type with less than 8 bytes the missing bytes are interpreted as being zero.

pub fn to_low_u64_ne(&self) -> u64

Returns the lowest 8 bytes interpreted as native-endian.

Note

For hash type with less than 8 bytes the missing bytes are interpreted as being zero.

pub fn from_low_u64_be(val: u64) -> H64

Creates a new hash type from the given u64 value.

Note

• The given u64 value is interpreted as big endian.
• Ignores the most significant bits of the given value if the hash type has less than 8 bytes.

pub fn from_low_u64_le(val: u64) -> H64

Creates a new hash type from the given u64 value.

Note

• The given u64 value is interpreted as little endian.
• Ignores the most significant bits of the given value if the hash type has less than 8 bytes.

pub fn from_low_u64_ne(val: u64) -> H64

Creates a new hash type from the given u64 value.

Note

• The given u64 value is interpreted as native endian.
• Ignores the most significant bits of the given value if the hash type has less than 8 bytes.

impl H64

Utilities using the rand crate.

pub fn randomize_using<R>(&mut self, rng: &mut R)

where R: Rng + ?Sized,

Assign self to a cryptographically random value using the given random number generator.

pub fn randomize(&mut self)

Assign self to a cryptographically random value.

pub fn random_using<R>(rng: &mut R) -> H64

where R: Rng + ?Sized,

Create a new hash with cryptographically random content using the given random number generator.

pub fn random() -> H64

Create a new hash with cryptographically random content.

Trait Implementations

impl AsMut<[u8]> for H64

fn as_mut(&mut self) -> &mut [u8]

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<[u8]> for H64

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

Converts this type into a shared reference of the (usually inferred) input type.

impl BigEndianHash for H64

type Uint = U64

fn from_uint(value: &U64) -> H64

fn into_uint(&self) -> U64

impl BitAnd for H64

type Output = H64

The resulting type after applying the & operator.

fn bitand(self, rhs: H64) -> <H64 as BitAnd>::Output

Performs the & operation.

impl<'l, 'r> BitAnd<&'r H64> for &'l H64

type Output = H64

The resulting type after applying the & operator.

fn bitand(self, rhs: &'r H64) -> <&'l H64 as BitAnd<&'r H64>>::Output

Performs the & operation.

impl BitAndAssign for H64

fn bitand_assign(&mut self, rhs: H64)

Performs the &= operation.

impl<'r> BitAndAssign<&'r H64> for H64

fn bitand_assign(&mut self, rhs: &'r H64)

Performs the &= operation.

impl BitOr for H64

type Output = H64

The resulting type after applying the | operator.

fn bitor(self, rhs: H64) -> <H64 as BitOr>::Output

Performs the | operation.

impl<'l, 'r> BitOr<&'r H64> for &'l H64

type Output = H64

The resulting type after applying the | operator.

fn bitor(self, rhs: &'r H64) -> <&'l H64 as BitOr<&'r H64>>::Output

Performs the | operation.

impl BitOrAssign for H64

fn bitor_assign(&mut self, rhs: H64)

Performs the |= operation.

impl<'r> BitOrAssign<&'r H64> for H64

fn bitor_assign(&mut self, rhs: &'r H64)

Performs the |= operation.

impl BitXor for H64

type Output = H64

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: H64) -> <H64 as BitXor>::Output

Performs the ^ operation.

impl<'l, 'r> BitXor<&'r H64> for &'l H64

type Output = H64

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: &'r H64) -> <&'l H64 as BitXor<&'r H64>>::Output

Performs the ^ operation.

impl BitXorAssign for H64

fn bitxor_assign(&mut self, rhs: H64)

Performs the ^= operation.

impl<'r> BitXorAssign<&'r H64> for H64

fn bitxor_assign(&mut self, rhs: &'r H64)

Performs the ^= operation.

impl Clone for H64

fn clone(&self) -> H64

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for H64

impl Debug for H64

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

Formats the value using the given formatter.

impl Decodable for H64

fn decode(rlp: &Rlp<'_>) -> Result<H64, DecoderError>

Decode a value from RLP bytes

impl Default for H64

fn default() -> H64

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for H64

fn deserialize<D>( deserializer: D, ) -> Result<H64, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for H64

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

Formats the value using the given formatter.

impl Encodable for H64

fn rlp_append(&self, s: &mut RlpStream)

Append a value to the stream

fn rlp_bytes(&self) -> BytesMut

Get rlp-encoded bytes for this instance

impl Eq for H64

impl<'a> From<&'a [u8; 8]> for H64

fn from(bytes: &'a [u8; 8]) -> H64

Constructs a hash type from the given reference to the bytes array of fixed length.

Note

The given bytes are interpreted in big endian order.

impl<'a> From<&'a mut [u8; 8]> for H64

fn from(bytes: &'a mut [u8; 8]) -> H64

Constructs a hash type from the given reference to the mutable bytes array of fixed length.

Note

The given bytes are interpreted in big endian order.

impl From<[u8; 8]> for H64

fn from(bytes: [u8; 8]) -> H64

Constructs a hash type from the given bytes array of fixed length.

Note

The given bytes are interpreted in big endian order.

impl FromStr for H64

fn from_str(input: &str) -> Result<H64, FromHexError>

Creates a hash type instance from the given string.

Note

The given input string is interpreted in big endian.

Errors

• When encountering invalid non hex-digits
• Upon empty string input or invalid input length in general

type Err = FromHexError

The associated error which can be returned from parsing.

impl Hash for H64

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<I> Index<I> for H64

where I: SliceIndex<[u8]>,

type Output = <I as SliceIndex<[u8]>>::Output

The returned type after indexing.

fn index(&self, index: I) -> &<I as SliceIndex<[u8]>>::Output

Performs the indexing (container[index]) operation.

impl<I> IndexMut<I> for H64

where I: SliceIndex<[u8], Output = [u8]>,

fn index_mut(&mut self, index: I) -> &mut <I as SliceIndex<[u8]>>::Output

Performs the mutable indexing (container[index]) operation.

impl LowerHex for H64

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

Formats the value using the given formatter.

impl Ord for H64

fn cmp(&self, other: &H64) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for H64

fn eq(&self, other: &H64) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for H64

fn partial_cmp(&self, other: &H64) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl RLPDecode for H64

fn decode_unfinished(rlp: &[u8]) -> Result<(H64, &[u8]), RLPDecodeError>

fn decode(rlp: &[u8]) -> Result<Self, RLPDecodeError>

impl RLPEncode for H64

fn encode(&self, buf: &mut dyn BufMut)

fn length(&self) -> usize

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

impl Serialize for H64

fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl UpperHex for H64

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

Formats the value using the given formatter.