Struct ethereum_types::H32

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#[repr(C)]pub struct H32(pub [u8; 4]);

Implementations

impl H32[−]

pub const fn repeat_byte(byte: u8) -> H32[−]

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

pub const fn zero() -> H32[−]

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; 4][−]

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

pub fn as_fixed_bytes_mut(&mut self) -> &mut [u8; 4][−]

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

pub const fn to_fixed_bytes(self) -> [u8; 4][−]

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]) -> Self[−]

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: &Self) -> 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 H32[−]

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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) -> Self[−]

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) -> Self[−]

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) -> Self[−]

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 H32[−]

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Utilities using the rand crate.

pub fn randomize_using<R: ?Sized>(&mut self, rng: &mut R) where
    R: Rng, [−]

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: ?Sized>(rng: &mut R) -> Self where
    R: Rng, [−]

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

pub fn random() -> Self[−]

Create a new hash with cryptographically random content.

Trait Implementations

impl AsMut<[u8]> for H32[+]

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fn as_mut(&mut self) -> &mut [u8][−]

Performs the conversion.

impl AsRef<[u8]> for H32[+]

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fn as_ref(&self) -> &[u8][−]

Performs the conversion.

impl<'l, 'r> BitAnd<&'r H32> for &'l H32[+]

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type Output = H32

The resulting type after applying the & operator.

fn bitand(self, rhs: &'r H32) -> Self::Output[−]

Performs the & operation.

impl BitAnd<H32> for H32[+]

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type Output = H32

The resulting type after applying the & operator.

fn bitand(self, rhs: Self) -> Self::Output[−]

Performs the & operation.

impl<'r> BitAndAssign<&'r H32> for H32[+]

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fn bitand_assign(&mut self, rhs: &'r H32)[−]

Performs the &= operation.

impl BitAndAssign<H32> for H32[+]

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fn bitand_assign(&mut self, rhs: H32)[−]

Performs the &= operation.

impl<'l, 'r> BitOr<&'r H32> for &'l H32[+]

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type Output = H32

The resulting type after applying the | operator.

fn bitor(self, rhs: &'r H32) -> Self::Output[−]

Performs the | operation.

impl BitOr<H32> for H32[+]

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type Output = H32

The resulting type after applying the | operator.

fn bitor(self, rhs: Self) -> Self::Output[−]

Performs the | operation.

impl<'r> BitOrAssign<&'r H32> for H32[+]

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fn bitor_assign(&mut self, rhs: &'r H32)[−]

Performs the |= operation.

impl BitOrAssign<H32> for H32[+]

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fn bitor_assign(&mut self, rhs: H32)[−]

Performs the |= operation.

impl<'l, 'r> BitXor<&'r H32> for &'l H32[+]

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type Output = H32

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: &'r H32) -> Self::Output[−]

Performs the ^ operation.

impl BitXor<H32> for H32[+]

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type Output = H32

The resulting type after applying the ^ operator.

fn bitxor(self, rhs: Self) -> Self::Output[−]

Performs the ^ operation.

impl<'r> BitXorAssign<&'r H32> for H32[+]

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fn bitxor_assign(&mut self, rhs: &'r H32)[−]

Performs the ^= operation.

impl BitXorAssign<H32> for H32[+]

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fn bitxor_assign(&mut self, rhs: H32)[−]

Performs the ^= operation.

impl Clone for H32[+]

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fn clone(&self) -> H32[−]

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Copy for H32

impl Debug for H32[+]

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

Formats the value using the given formatter.

impl Decodable for H32[+]

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fn decode(rlp: &Rlp<'_>) -> Result<Self, DecoderError>[−]

Decode a value from RLP bytes

impl Default for H32[+]

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fn default() -> Self[−]

Returns the "default value" for a type.

impl Display for H32[+]

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

Formats the value using the given formatter.

impl Distribution<H32> for Standard[+]

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fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> H32[−]

Generate a random value of T, using rng as the source of randomness.

fn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T> where
    R: Rng, [−]

Create an iterator that generates random values of T, using rng as the source of randomness.

impl Encodable for H32[+]

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fn rlp_append(&self, s: &mut RlpStream)[−]

Append a value to the stream

fn rlp_bytes(&self) -> Vec<u8>[−]

Get rlp-encoded bytes for this instance

impl Eq for H32

impl<'a> From<&'a [u8; 4]> for H32[+]

fn from(bytes: &'a [u8; 4]) -> Self[−]

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; 4]> for H32[+]

fn from(bytes: &'a mut [u8; 4]) -> Self[−]

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; 4]> for H32[+]

fn from(bytes: [u8; 4]) -> Self[−]

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

Note

The given bytes are interpreted in big endian order.

impl From<H32> for [u8; 4][+]

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fn from(s: H32) -> Self[−]

Performs the conversion.

impl FromStr for H32[+]

type Err = FromHexError

The associated error which can be returned from parsing.

fn from_str(input: &str) -> Result<H32, 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

impl Hash for H32[+]

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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<I> Index<I> for H32 where
    I: SliceIndex<[u8]>, [+]

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type Output = I::Output

The returned type after indexing.

fn index(&self, index: I) -> &I::Output[−]

Performs the indexing (container[index]) operation.

impl<I> IndexMut<I> for H32 where
    I: SliceIndex<[u8], Output = [u8]>, [+]

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fn index_mut(&mut self, index: I) -> &mut I::Output[−]

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

impl LowerHex for H32[+]

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

Formats the value using the given formatter.

impl Ord for H32[+]

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fn cmp(&self, other: &Self) -> Ordering[−]

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

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

Restrict a value to a certain interval.

impl PartialEq<H32> for H32[+]

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fn eq(&self, other: &Self) -> bool[−]

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

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

This method tests for !=.

impl PartialOrd<H32> for H32[+]

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fn partial_cmp(&self, other: &Self) -> Option<Ordering>[−]

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

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

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

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

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

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

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

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#[must_use]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 H32[+]

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

Formats the value using the given formatter.