Struct BlockHash 

pub struct BlockHash(pub H256);

Available on crate feature tangle only.

Extracts the current block hash from the job call.

Tuple Fields

0: H256

Implementations

impl BlockHash

pub const METADATA_KEY: &'static str = "X-TANGLE-BLOCK-HASH"

Methods from Deref<Target = H256>

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 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 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 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.

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 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.

Trait Implementations

impl Clone for BlockHash

fn clone(&self) -> BlockHash

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlockHash

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

Formats the value using the given formatter.

impl Deref for BlockHash

type Target = H256

The resulting type after dereferencing.

fn deref(&self) -> &<BlockHash as Deref>::Target

Dereferences the value.

impl DerefMut for BlockHash

fn deref_mut(&mut self) -> &mut <BlockHash as Deref>::Target

Mutably dereferences the value.

impl From<H256> for BlockHash

fn from(value: H256) -> BlockHash

Converts to this type from the input type.

impl<Ctx> FromJobCallParts<Ctx> for BlockHash

where Ctx: Send + Sync,

type Rejection = BlockHashRejection

If the extractor fails it’ll use this “rejection” type. A rejection is a kind of error that can be converted into a job result.

async fn from_job_call_parts( parts: &mut Parts, _: &Ctx, ) -> Result<BlockHash, <BlockHash as FromJobCallParts<Ctx>>::Rejection>

Perform the extraction.

impl Hash for BlockHash

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 BlockHash

fn cmp(&self, other: &BlockHash) -> 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 BlockHash

fn eq(&self, other: &BlockHash) -> 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 BlockHash

fn partial_cmp(&self, other: &BlockHash) -> 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 TryFrom<&mut Parts> for BlockHash

type Error = BlockHashRejection

The type returned in the event of a conversion error.

fn try_from( parts: &mut Parts, ) -> Result<BlockHash, <BlockHash as TryFrom<&mut Parts>>::Error>

Performs the conversion.

impl Copy for BlockHash

impl Eq for BlockHash

impl StructuralPartialEq for BlockHash