Struct PreHashed

pub struct PreHashed<I, H = u64> { /* private fields */ }

A wrapper type that hashes some inner on creation, implementing Hash by simply returning the pre-computed hash.

Implementations

impl<I, H> PreHashed<I, H>

pub fn new(hash: H, inner: I) -> Self

Create a new PreHashed value with the given hash and inner value.

SAFETY: The hash must be a valid hash of the inner value.

pub fn into_parts(self) -> (H, I)

Split the PreHashed value into its hash and inner value.

Trait Implementations

impl<I, H> AsRef<I> for PreHashed<I, H>

fn as_ref(&self) -> &I

Converts this type into a shared reference of the (usually inferred) input type.

impl<I: Clone, H: Clone> Clone for PreHashed<I, H>

fn clone(&self) -> PreHashed<I, H>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I: Debug, H: Debug> Debug for PreHashed<I, H>

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

Formats the value using the given formatter.

impl<I> Deref for PreHashed<I>

type Target = I

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<I: Display, H> Display for PreHashed<I, H>

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

Formats the value using the given formatter.

impl<I, H: Hash> Hash for PreHashed<I, H>

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

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<I: PartialEq, H> PartialEq for PreHashed<I, H>

fn eq(&self, other: &Self) -> 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<I: Copy, H: Copy> Copy for PreHashed<I, H>

impl<I: Eq, H> Eq for PreHashed<I, H>