Struct sp_runtime::testing::H256

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

Expand description

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

Tuple Fields

0: [u8; 32]

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 ]ⓘNotable traits for &'_ [u8 ]`impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]`

Extracts a byte slice containing the entire fixed hash.

pub fn as_bytes_mut(&mut self) -> &mut [u8 ]ⓘNotable traits for &'_ [u8 ]`impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ 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.

impl H256

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) -> H256

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) -> H256

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) -> H256

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 H256

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) -> H256 where
R: Rng + ?Sized,

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

pub fn random() -> H256

Create a new hash with cryptographically random content.

Trait Implementations

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. Read more

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. Read more

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

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

Performs the &= operation. Read more

impl BitAndAssign<H256> for H256

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

Performs the &= operation. Read more

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. Read more

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. Read more

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

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

Performs the |= operation. Read more

impl BitOrAssign<H256> for H256

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

Performs the |= operation. Read more

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. Read more

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. Read more

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

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

Performs the ^= operation. Read more

impl BitXorAssign<H256> for H256

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

Performs the ^= operation. Read more

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impl Clone for H256

pub fn clone(&self) -> H256

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

impl Debug for H256

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

Formats the value using the given formatter. Read more

impl Decode for H256

pub fn decode(input: &mut I) -> Result<H256, Error> where
I: Input,

Attempt to deserialise the value from input.

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fn skip(input: &mut I) -> Result<(), Error> where
I: Input,

Attempt to skip the encoded value from input. Read more

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fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type. Read more

impl Default for H256

pub fn default() -> H256

Returns the “default value” for a type. Read more

impl<'de> Deserialize<'de> for H256

pub fn deserialize<D>(
deserializer: D
) -> Result<H256, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

impl Display for H256

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

Formats the value using the given formatter. Read more

impl Encode for H256

pub fn using_encoded<R, F>(&self, f: F) -> R where
F: FnOnce(&[u8 ]) -> R,

Convert self to a slice and then invoke the given closure with it.

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fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding. Read more

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fn encode_to<T>(&self, dest: &mut T) where
T: Output + ?Sized,

Convert self to a slice and append it to the destination.

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fn encode(&self) -> Vec<u8, Global>ⓘNotable traits for Vec<u8, A>`impl<A> Write for Vec<u8, A> where A: Allocator,`

Convert self to an owned vector.

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fn encoded_size(&self) -> usize

Calculates the encoded size. Read more

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.

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impl FromStr for H256

pub fn from_str(input: &str) -> Result<H256, 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 H256

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

Feeds this value into the given Hasher. Read more

1.3.0 · source

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

Feeds a slice of this type into the given Hasher. Read more

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

type Output = >::Output

The returned type after indexing.

pub fn index(&self, index: I) -> &>::Output

Performs the indexing (container[index]) operation. Read more

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

pub fn index_mut(&mut self, index: I) -> &mut >::Output

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

impl LowerHex for H256

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

Formats the value using the given formatter.

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Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself. If T::size_of is a constant, consider implementing constant_size as well. Read more

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pub fn constant_size() -> Option<usize>

Used to optimize MallocSizeOf implementation for collections like Vec and HashMap to avoid iterating over them unnecessarily. The Self: Sized bound is for object safety. Read more

impl MaxEncodedLen for H256

pub fn max_encoded_len() -> usize

Upper bound, in bytes, of the maximum encoded size of this item.

impl Ord for H256

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

This method returns an Ordering between self and other. Read more

1.21.0 · source

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

Compares and returns the maximum of two values. Read more

1.21.0 · source

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

Compares and returns the minimum of two values. Read more

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

Restrict a value to a certain interval. Read more

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 ==. Read more

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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. Read more

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

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

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

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

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

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

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

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

impl PassBy for H256

type PassBy = Inner<H256, [u8 ; 32]>

The strategy that should be used to pass the type.

impl PassByInner for H256

type Inner = [u8 ; 32]

The inner type that is wrapped by Self.

pub fn inner(&self) -> &<H256 as PassByInner>::Inner

Returns the reference to the inner type.

pub fn into_inner(self) -> <H256 as PassByInner>::Inner

Consumes self and returns the inner type.

pub fn from_inner(inner: <H256 as PassByInner>::Inner) -> H256

Construct Self from the given inner.

impl Serialize for H256

pub 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. Read more

impl TypeInfo for H256

type Identity = H256

The type identifying for which type info is provided. Read more

pub fn type_info() -> Type<MetaForm>

Returns the static type identifier for Self.

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impl UncheckedFrom<H256> for Public

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pub fn unchecked_from(x: H256) -> Public

Convert from an instance of T to Self. This is not guaranteed to be whatever counts as a valid instance of T and it’s up to the caller to ensure that it makes sense. Read more

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impl UncheckedFrom<H256> for AccountId32

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pub fn unchecked_from(h: H256) -> AccountId32

Convert from an instance of T to Self. This is not guaranteed to be whatever counts as a valid instance of T and it’s up to the caller to ensure that it makes sense. Read more

impl UpperHex for H256

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

Formats the value using the given formatter.

impl Copy for H256

impl EncodeLike<H256> for H256

impl Eq for H256

Auto Trait Implementations

impl RefUnwindSafe for H256

impl Send for H256

impl Sync for H256

impl Unpin for H256

impl UnwindSafe for H256

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T, U> AsByteSlice<T> for U where
T: ToByteSlice,
U: AsRef<[T]> + ?Sized,

pub fn as_byte_slice(&self) -> &[u8 ]ⓘNotable traits for &'_ [u8 ]`impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]`

impl<T, U> AsMutByteSlice<T> for U where
T: ToMutByteSlice,
U: AsMut<[T]> + ?Sized,

pub fn as_mut_byte_slice(&mut self) -> &mut [u8 ]ⓘNotable traits for &'_ [u8 ]`impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]`

impl AsMutSliceOf for U where
U: AsMut<[u8 ]> + ?Sized,

pub fn as_mut_slice_of<T>(&mut self) -> Result<&mut [T], Error> where
T: FromByteSlice,

impl AsSliceOf for U where
U: AsRef<[u8 ]> + ?Sized,

pub fn as_slice_of<T>(&self) -> Result<&[T], Error> where
T: FromByteSlice,

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CallHasher for T where
T: Hash + ?Sized,

pub default fn get_hash<H, B>(value: &H, build_hasher: &B) -> u64 where
H: Hash + ?Sized,
B: BuildHasher,

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impl<T> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self> where
Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more

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fn checked_into<T>(self) -> Option<T> where
Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more

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impl<T> Clear for T where
T: Default + Eq + PartialEq<T>,

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fn is_clear(&self) -> bool

True iff no bits are set.

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fn clear() -> Self

Return the value of Self that is clear.

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impl<T> DecodeAll for T where
T: Decode,

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pub fn decode_all(input: &mut &[u8 ]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more

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impl<T> DecodeLimit for T where
T: Decode,

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pub fn decode_all_with_depth_limit(
limit: u32,
input: &mut &[u8 ]
) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more

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pub fn decode_with_depth_limit(limit: u32, input: &mut I) -> Result<T, Error> where
I: Input,

Decode Self with the given maximum recursion depth and advance input by the number of bytes consumed. Read more

impl<T> Downcast for T where
T: Any,

pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<R, Global>`impl<R> Read for Box<R, Global> where R: Read + ?Sized, impl<W> Write for Box<W, Global> where W: Write + ?Sized, impl<I, A> Iterator for Box<I, A> where I: Iterator + ?Sized, A: Allocator, type Item = ::Item;impl<F, A> Future for Box<F, A> where F: Future + Unpin + ?Sized, A: Allocator + 'static, type Output = <F as Future>::Output;`

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more

pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

pub fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

impl<T> DowncastSync for T where
T: Any + Send + Sync,

pub fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more