Struct keccak_hash::H256

#[repr(C)]pub struct H256(pub [u8; 32]);

Fixed-size uninterpreted hash type with 32 bytes (256 bits) size.

Implementations

impl H256

pub const fn repeat_byte(byte: u8) -> H256

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

pub const fn zero() -> H256

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; 32]

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

pub fn as_fixed_bytes_mut(&mut self) -> &mut [u8; 32]

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

pub const fn to_fixed_bytes(self) -> [u8; 32]

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]) -> H256

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: &H256) -> 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.

Trait Implementations

impl AsMut<[u8]> for H256

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

Performs the conversion.

impl AsRef<[u8]> for H256

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

Performs the conversion.

impl<'l, 'r> BitAnd<&'r H256> for &'l H256

type Output = H256

The resulting type after applying the & operator.

pub fn bitand(self, rhs: &'r H256) -> <&'l H256 as BitAnd<&'r H256>>::Output

Performs the & operation.

impl BitAnd<H256> for H256

type Output = H256

The resulting type after applying the & operator.

pub fn bitand(self, rhs: H256) -> <H256 as BitAnd<H256>>::Output

Performs the & operation.

impl<'r> BitAndAssign<&'r H256> for H256

pub fn bitand_assign(&mut self, rhs: &'r H256)

Performs the &= operation.

impl BitAndAssign<H256> for H256

pub fn bitand_assign(&mut self, rhs: H256)

Performs the &= operation.

impl<'l, 'r> BitOr<&'r H256> for &'l H256

type Output = H256

The resulting type after applying the | operator.

pub fn bitor(self, rhs: &'r H256) -> <&'l H256 as BitOr<&'r H256>>::Output

Performs the | operation.

impl BitOr<H256> for H256

type Output = H256

The resulting type after applying the | operator.

pub fn bitor(self, rhs: H256) -> <H256 as BitOr<H256>>::Output

Performs the | operation.

impl<'r> BitOrAssign<&'r H256> for H256

pub fn bitor_assign(&mut self, rhs: &'r H256)

Performs the |= operation.

impl BitOrAssign<H256> for H256

pub fn bitor_assign(&mut self, rhs: H256)

Performs the |= operation.

impl<'l, 'r> BitXor<&'r H256> for &'l H256

type Output = H256

The resulting type after applying the ^ operator.

pub fn bitxor(self, rhs: &'r H256) -> <&'l H256 as BitXor<&'r H256>>::Output

Performs the ^ operation.

impl BitXor<H256> for H256

type Output = H256

The resulting type after applying the ^ operator.

pub fn bitxor(self, rhs: H256) -> <H256 as BitXor<H256>>::Output

Performs the ^ operation.

impl<'r> BitXorAssign<&'r H256> for H256

pub fn bitxor_assign(&mut self, rhs: &'r H256)

Performs the ^= operation.

impl BitXorAssign<H256> for H256

pub fn bitxor_assign(&mut self, rhs: H256)

Performs the ^= operation.

impl Clone for H256

pub fn clone(&self) -> H256

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for H256

impl Debug for H256

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

Formats the value using the given formatter.

impl Default for H256

pub fn default() -> H256

Returns the "default value" for a type.

impl Display for H256

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

Formats the value using the given formatter.

impl Eq for H256

impl<'a> From<&'a [u8; 32]> for H256

pub fn from(bytes: &'a [u8; 32]) -> H256

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; 32]> for H256

pub fn from(bytes: &'a mut [u8; 32]) -> H256

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; 32]> for H256

pub fn from(bytes: [u8; 32]) -> H256

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

Note

The given bytes are interpreted in big endian order.

impl From<H160> for H256

pub fn from(value: H160) -> H256

Performs the conversion.

impl Hash for H256

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl<I> Index<I> for H256 where
    I: SliceIndex<[u8]>, 

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

The returned type after indexing.

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

Performs the indexing (container[index]) operation.

impl<I> IndexMut<I> for H256 where
    I: SliceIndex<[u8], Output = [u8]>, 

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

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

impl LowerHex for H256

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

Formats the value using the given formatter.

impl Ord for H256

pub fn cmp(&self, other: &H256) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<H256> for H256

pub fn eq(&self, other: &H256) -> bool

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

#[must_use]pub fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl PartialOrd<H256> for H256

pub fn partial_cmp(&self, other: &H256) -> Option<Ordering>

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

#[must_use]pub fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]pub fn le(&self, other: &Rhs) -> bool

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

#[must_use]pub fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]pub fn ge(&self, other: &Rhs) -> bool

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

impl UpperHex for H256

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

Formats the value using the given formatter.