[−]Struct bevy_ecs::bevy_utils::AHasher
A Hasher
for hashing an arbitrary stream of bytes.
Instances of AHasher
represent state that is updated while hashing data.
Each method updates the internal state based on the new data provided. Once
all of the data has been provided, the resulting hash can be obtained by calling
finish()
Clone is also provided in case you wish to calculate hashes for two different items that start with the same data.
Implementations
impl AHasher
pub fn new_with_keys(key1: u128, key2: u128) -> AHasher
Creates a new hasher keyed to the provided key.
Trait Implementations
impl Clone for AHasher
fn clone(&self) -> AHasher
fn clone_from(&mut self, source: &Self)
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impl Debug for AHasher
impl Default for AHasher
Provides a default Hasher compile time generated constants for keys. This is typically used in conjunction with BuildHasherDefault to create AHashers in order to hash the keys of the map.
Generally it is preferable to use [RandomState] instead, so that different hashmaps will have different keys. However if fixed keys are desireable this may be used instead.
Example
use std::hash::BuildHasherDefault; use ahash::{AHasher, RandomState}; use std::collections::HashMap; let mut map: HashMap<i32, i32, BuildHasherDefault<AHasher>> = HashMap::default(); map.insert(12, 34);
fn default() -> AHasher
Constructs a new AHasher with compile time generated constants for keys if the
compile-time-rng
feature is enabled. Otherwise the keys will be fixed constants.
This means the keys will be the same from one instance to another,
but different from build to the next. So if it is possible for a potential
attacker to have access to the compiled binary it would be better
to specify keys generated at runtime.
Examples
use ahash::AHasher; use std::hash::Hasher; let mut hasher_1 = AHasher::default(); let mut hasher_2 = AHasher::default(); hasher_1.write_u32(1234); hasher_2.write_u32(1234); assert_eq!(hasher_1.finish(), hasher_2.finish());
impl Hasher for AHasher
Provides methods to hash all of the primitive types.
fn write_u8(&mut self, i: u8)
fn write_u16(&mut self, i: u16)
fn write_u32(&mut self, i: u32)
fn write_u64(&mut self, i: u64)
fn write_u128(&mut self, i: u128)
fn write_usize(&mut self, i: usize)
fn write(&mut self, input: &[u8])
fn finish(&self) -> u64
fn write_i8(&mut self, i: i8)
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fn write_i16(&mut self, i: i16)
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fn write_i32(&mut self, i: i32)
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fn write_i64(&mut self, i: i64)
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fn write_i128(&mut self, i: i128)
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fn write_isize(&mut self, i: isize)
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Auto Trait Implementations
impl RefUnwindSafe for AHasher
impl Send for AHasher
impl Sync for AHasher
impl Unpin for AHasher
impl UnwindSafe for AHasher
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Component for T where
T: 'static + Send + Sync,
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T: 'static + Send + Sync,
impl<T> Downcast for T where
T: Any,
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T: Any,
fn into_any(self: Box<T>) -> Box<dyn Any + 'static>
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
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fn as_any(&self) -> &(dyn Any + 'static)
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
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impl<T> DowncastSync for T where
T: Send + Sync + Any,
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T: Send + Sync + Any,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,