Docs4dev
Docs
rust / latest / std / hash / struct.siphasher.html

Struct std::hash::SipHasher

pub struct SipHasher(/* private fields */);
👎Deprecated since 1.13.0: use std::collections::hash_map::DefaultHasher instead

An implementation of SipHash 2-4.

See: https://131002.net/siphash/

SipHash is a general-purpose hashing function: it runs at a good speed (competitive with Spooky and City) and permits strong keyed hashing. This lets you key your hash tables from a strong RNG, such as rand::os::OsRng.

Although the SipHash algorithm is considered to be generally strong, it is not intended for cryptographic purposes. As such, all cryptographic uses of this implementation are strongly discouraged.

Implementations

source 
impl SipHasher
const: unstablesource 
pub fn new() -> SipHasher
👎Deprecated since 1.13.0: use std::collections::hash_map::DefaultHasher instead

Creates a new SipHasher with the two initial keys set to 0.

const: unstablesource 
pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher
👎Deprecated since 1.13.0: use std::collections::hash_map::DefaultHasher instead

Creates a SipHasher that is keyed off the provided keys.

Trait Implementations

source 
impl Clone for SipHasher
source 
fn clone(&self) -> SipHasher
Returns a copy of the value. Read more
source 
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
source 
impl Debug for SipHasher
source 
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
source 
impl Default for SipHasher
source 
fn default() -> SipHasher
Returns the “default value” for a type. Read more
source 
impl Hasher for SipHasher
source 
fn write(&mut self, msg: &[u8])
Writes some data into this Hasher. Read more
source 
fn write_str(&mut self, s: &str)
🔬This is a nightly-only experimental API. (hasher_prefixfree_extras #96762)
Writes a single str into this hasher. Read more
source 
fn finish(&self) -> u64
Returns the hash value for the values written so far. Read more
1.3.0source 
fn write_u8(&mut self, i: u8)
Writes a single u8 into this hasher.
1.3.0source 
fn write_u16(&mut self, i: u16)
Writes a single u16 into this hasher.
1.3.0source 
fn write_u32(&mut self, i: u32)
Writes a single u32 into this hasher.
1.3.0source 
fn write_u64(&mut self, i: u64)
Writes a single u64 into this hasher.
1.26.0source 
fn write_u128(&mut self, i: u128)
Writes a single u128 into this hasher.
1.3.0source 
fn write_usize(&mut self, i: usize)
Writes a single usize into this hasher.
1.3.0source 
fn write_i8(&mut self, i: i8)
Writes a single i8 into this hasher.
1.3.0source 
fn write_i16(&mut self, i: i16)
Writes a single i16 into this hasher.
1.3.0source 
fn write_i32(&mut self, i: i32)
Writes a single i32 into this hasher.
1.3.0source 
fn write_i64(&mut self, i: i64)
Writes a single i64 into this hasher.
1.26.0source 
fn write_i128(&mut self, i: i128)
Writes a single i128 into this hasher.
1.3.0source 
fn write_isize(&mut self, i: isize)
Writes a single isize into this hasher.
source 
fn write_length_prefix(&mut self, len: usize)
🔬This is a nightly-only experimental API. (hasher_prefixfree_extras #96762)
Writes a length prefix into this hasher, as part of being prefix-free. Read more

Auto Trait Implementations

impl RefUnwindSafe for SipHasher
impl Send for SipHasher
impl Sync for SipHasher
impl Unpin for SipHasher
impl UnwindSafe for SipHasher

Blanket Implementations

source 
impl<T> Any for T
where
    T: 'static + ?Sized,
source 
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
source 
impl<T> Borrow<T> for T
where
    T: ?Sized,
source 
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
source 
impl<T> BorrowMut<T> for T
where
    T: ?Sized,
source 
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source 
impl<T> From<T> for T
source 
fn from(t: T) -> T

Returns the argument unchanged.

source 
impl<T, U> Into<U> for T
where
    U: From<T>,
source 
fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source 
impl<T> ToOwned for T
where
    T: Clone,
 
type Owned = T
The resulting type after obtaining ownership.
source 
fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
source 
fn clone_into(&self, target: &mut T)
Uses borrowed data to replace owned data, usually by cloning. Read more
source 
impl<T, U> TryFrom<U> for T
where
    U: Into<T>,
 
type Error = Infallible
The type returned in the event of a conversion error.
source 
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
Performs the conversion.
source 
impl<T, U> TryInto<U> for T
where
    U: TryFrom<T>,
 
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
source 
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
Performs the conversion.

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/hash/struct.SipHasher.html