Struct pwasm_std::hash::H256

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

Unformatted binary data of fixed length.

Methods

impl H256

pub fn new() -> H256

Create a new, zero-initialised, instance.

pub fn zero() -> H256

Synonym for new(). Prefer to new as it's more readable.

pub fn len() -> usize

Get the size of this object in bytes.

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 clone_from_slice(&mut self, src: &[u8]) -> usize

Assign self to be of the same value as a slice of bytes of length len().

pub fn from_slice(src: &[u8]) -> H256

Convert a slice of bytes of length len() to an instance of this type.

pub fn copy_to(&self, dest: &mut [u8])

Copy the data of this object into some mutable slice of length len().

pub fn contains(&'a self, b: &'a 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.

pub fn low_u64(&self) -> u64

Returns the lowest 8 bytes interpreted as a BigEndian integer.

Trait Implementations

impl DerefMut for H256

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

Mutably dereferences the value.

impl Hash for H256

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, 

Feeds a slice of this type into the given [Hasher].

impl<'a> BitOr<&'a H256> for &'a H256

BitOr on references

type Output = H256

The resulting type after applying the | operator.

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

Performs the | operation.

impl BitOr<H256> for H256

Moving BitOr

type Output = H256

The resulting type after applying the | operator.

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

Performs the | operation.

impl Ord for H256

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl Copy for H256

impl PartialOrd<H256> for H256

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

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

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

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

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

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

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

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

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 AsRef<[u8]> for H256

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

Performs the conversion.

impl BitAnd<H256> for H256

Moving BitAnd

type Output = H256

The resulting type after applying the & operator.

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

Performs the & operation.

impl<'a> BitAnd<&'a H256> for &'a H256

BitAnd on references

type Output = H256

The resulting type after applying the & operator.

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

Performs the & operation.

impl Clone for H256

fn clone(&self) -> H256

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Index<usize> for H256

type Output = u8

The returned type after indexing.

fn index(&self, index: usize) -> &u8

Performs the indexing (container[index]) operation.

impl Index<RangeFull> for H256

type Output = [u8]

The returned type after indexing.

fn index(&self, _index: RangeFull) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<Range<usize>> for H256

type Output = [u8]

The returned type after indexing.

fn index(&self, index: Range<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl IndexMut<Range<usize>> for H256

fn index_mut(&mut self, index: Range<usize>) -> &mut [u8]

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

impl IndexMut<RangeFull> for H256

fn index_mut(&mut self, _index: RangeFull) -> &mut [u8]

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

impl IndexMut<usize> for H256

fn index_mut(&mut self, index: usize) -> &mut u8

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

impl From<H160> for H256

fn from(value: H160) -> H256

Performs the conversion.

impl From<[u8; 32]> for H256

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

Performs the conversion.

impl From<H256> for U256

fn from(value: H256) -> U256

Performs the conversion.

impl<'a> From<&'a H160> for H256

fn from(value: &'a H160) -> H256

Performs the conversion.

impl From<H256> for H64

fn from(value: H256) -> H64

Performs the conversion.

impl<'a> From<&'a U256> for H256

fn from(value: &'a U256) -> H256

Performs the conversion.

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

fn from(s: &'a [u8]) -> H256

Performs the conversion.

impl From<u64> for H256

fn from(value: u64) -> H256

Performs the conversion.

impl From<H256> for H160

fn from(value: H256) -> H160

Performs the conversion.

impl From<H256> for [u8; 32]

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

Performs the conversion.

impl From<U256> for H256

fn from(value: U256) -> H256

Performs the conversion.

impl<'a> From<&'a H256> for U256

fn from(value: &'a H256) -> U256

Performs the conversion.

impl Default for H256

fn default() -> H256

Returns the "default value" for a type.

impl Eq for H256

impl<'a> BitXor<&'a H256> for &'a H256

BitXor on references

type Output = H256

The resulting type after applying the ^ operator.

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

Performs the ^ operation.

impl BitXor<H256> for H256

Moving BitXor

type Output = H256

The resulting type after applying the ^ operator.

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

Performs the ^ operation.

impl Deref for H256

type Target = [u8]

The resulting type after dereferencing.

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

Dereferences the value.

impl AsMut<[u8]> for H256

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

Performs the conversion.

impl PartialEq<H256> for H256

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

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

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

This method tests for !=.