Struct sp_core::H256[][src]

#[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

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

Returns a new zero-initialized fixed hash.

Returns the size of this hash in bytes.

Extracts a byte slice containing the entire fixed hash.

Extracts a mutable byte slice containing the entire fixed hash.

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

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

Returns the inner bytes array.

Returns a constant raw pointer to the value.

Returns a mutable raw pointer to the value.

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.

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.

Returns true if all bits set in b are also set in self.

Returns true if no bits are set.

Utilities using the byteorder crate.

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.

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.

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.

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.

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.

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.

Utilities using the rand crate.

Assign self to a cryptographically random value using the given random number generator.

Assign self to a cryptographically random value.

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

Create a new hash with cryptographically random content.

Trait Implementations

Performs the conversion.

Performs the conversion.

The resulting type after applying the & operator.

Performs the & operation. Read more

The resulting type after applying the & operator.

Performs the & operation. Read more

Performs the &= operation. Read more

Performs the &= operation. Read more

The resulting type after applying the | operator.

Performs the | operation. Read more

The resulting type after applying the | operator.

Performs the | operation. Read more

Performs the |= operation. Read more

Performs the |= operation. Read more

The resulting type after applying the ^ operator.

Performs the ^ operation. Read more

The resulting type after applying the ^ operator.

Performs the ^ operation. Read more

Performs the ^= operation. Read more

Performs the ^= operation. Read more

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Attempt to deserialise the value from input.

Attempt to skip the encoded value from input. Read more

Returns the fixed encoded size of the type. Read more

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

Deserialize this value from the given Serde deserializer. Read more

Formats the value using the given formatter. Read more

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

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

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

Convert self to an owned vector.

Calculates the encoded size. Read more

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.

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.

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

Note

The given bytes are interpreted in big endian order.

Performs the conversion.

Performs the conversion.

Performs the conversion.

Performs the conversion.

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

The associated error which can be returned from parsing.

Feeds this value into the given Hasher. Read more

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

The returned type after indexing.

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

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

Formats the value using the given formatter.

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

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

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

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

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

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

This method tests for !=.

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

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

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

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

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

The strategy that should be used to pass the type.

The inner type that is wrapped by Self.

Returns the reference to the inner type.

Consumes self and returns the inner type.

Construct Self from the given inner.

Serialize this value into the given Serde serializer. Read more

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

Returns the static type identifier for Self.

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

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

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

Formats the value using the given formatter.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

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

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

Decode Self and advance input by the number of bytes consumed. Read more

Decode Self with the given maximum recursion depth. Read more

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

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

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

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

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

Performs the conversion.

As Self can be an unsized type, it needs to be represented by a sized type at the host. This SelfInstance is the sized type. Read more

Create SelfInstance from the given

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Performs the conversion.

Convert self into a ffi value.

Get a reference to the inner from the outer.

Get a mutable reference to the inner from the outer.

Return an encoding of Self prepended by given slice.

Method to launch a heapsize measurement with a fresh state. Read more

The ffi type that is used to represent Self.

Should always be Self

Encode the hex strict representing self into the result. Lower case letters are used (e.g. f9b4ca) Read more

Encode the hex strict representing self into the result. Upper case letters are used (e.g. F9B4CA) Read more

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

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

Uses borrowed data to replace owned data, usually by cloning. Read more

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

The counterpart to unchecked_from.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more