Struct B256 

pub struct B256(pub [u8; 32]);

Thirty-two bytes: a transaction or block hash, a log topic, a storage slot.

Tuple Fields

0: [u8; 32]

Implementations

impl B256

pub const ZERO: B256

pub fn from_address(address: Address) -> B256

An address as a word: twelve zero bytes, then its twenty.

pub fn to_address(&self) -> Option<Address>

The address in the low twenty bytes, when the high twelve are zero: how an indexed address sits in a log topic.

pub fn to_hex(&self) -> String

Trait Implementations

impl Clone for B256

fn clone(&self) -> B256

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for B256

impl Debug for B256

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

Formats the value using the given formatter.

impl Default for B256

fn default() -> B256

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for B256

fn deserialize<D>( deserializer: D, ) -> Result<B256, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for B256

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

Formats the value using the given formatter.

impl Eq for B256

impl From<B256> for U256

fn from(word: B256) -> U256

Converts to this type from the input type.

impl From<U256> for B256

fn from(value: U256) -> B256

Converts to this type from the input type.

impl From<[u8; 32]> for B256

fn from(bytes: [u8; 32]) -> B256

Converts to this type from the input type.

impl FromStr for B256

type Err = BadHex

The associated error which can be returned from parsing.

fn from_str(text: &str) -> Result<B256, <B256 as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for B256

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 Ord for B256

fn cmp(&self, other: &B256) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for B256

fn eq(&self, other: &B256) -> bool

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for B256

fn partial_cmp(&self, other: &B256) -> 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 Serialize for B256

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 StructuralPartialEq for B256