[][src]Struct ahash::ABuildHasher

pub struct ABuildHasher { /* fields omitted */ }

Provides a Hasher factory. This is typically used (e.g. by [HashMap]) to create AHashers in order to hash the keys of the map. See build_hasher below.

Methods

impl ABuildHasher[src]

Trait Implementations

impl BuildHasher for ABuildHasher[src]

type Hasher = AHasher

Type of the hasher that will be created.

fn build_hasher(&self) -> AHasher[src]

Constructs a new AHasher with keys based on compile time generated constants and the location of the this object in memory. This means that two different BuildHashers will will generate AHashers that will return different hashcodes, but Hashers created from the same BuildHasher will generate the same hashes for the same input data.

Examples

use ahash::{AHasher, ABuildHasher};
use std::hash::{Hasher, BuildHasher};

let build_hasher = ABuildHasher::new();
let mut hasher_1 = build_hasher.build_hasher();
let mut hasher_2 = build_hasher.build_hasher();

hasher_1.write_u32(1234);
hasher_2.write_u32(1234);

assert_eq!(hasher_1.finish(), hasher_2.finish());

let other_build_hasher = ABuildHasher::new();
let mut different_hasher = other_build_hasher.build_hasher();
different_hasher.write_u32(1234);
assert_ne!(different_hasher.finish(), hasher_1.finish());

impl Clone for ABuildHasher[src]

impl Default for ABuildHasher[src]

Auto Trait Implementations

Blanket Implementations

impl<T> From<T> for T[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

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