Struct HashKey 

pub struct HashKey(/* private fields */);

A database hash key, used in FFI functions that require hashes. This type requires no allocation and can be copied freely and dropped without any additional overhead.

This is useful because it is the same size as 4 words which is equivalent to 2 heap-allocated slices (pointer + length each), or 1.5 vectors (which uses an extra word for allocation capacity) and it can be passed around without needing to allocate or deallocate memory.

Trait Implementations

impl Clone for HashKey

fn clone(&self) -> HashKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HashKey

impl Debug for HashKey

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

Formats the value using the given formatter.

impl Default for HashKey

fn default() -> HashKey

Returns the “default value” for a type.

impl Display for HashKey

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

Formats the value using the given formatter.

impl Eq for HashKey

impl From<HashKey> for HashKey

fn from(value: HashKey) -> Self

Converts to this type from the input type.

impl From<TrieHash> for HashKey

fn from(value: HashKey) -> Self

Converts to this type from the input type.

impl Hash for HashKey

fn hash<__H: Hasher>(&self, state: &mut __H)

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 HashKey

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

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

fn partial_cmp(&self, other: &HashKey) -> 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 StructuralPartialEq for HashKey