# 1.0.0[−][src]Struct core::hash::SipHasher

    pub struct SipHasher(_);

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 hashtables 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.

## Methods

###

`impl SipHasher`

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####

`pub fn new() -> SipHasher`

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Deprecated since 1.13.0

: use `std::collections::hash_map::DefaultHasher` instead

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

####

`pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher`

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Deprecated since 1.13.0

: use `std::collections::hash_map::DefaultHasher` instead

Creates a `SipHasher` that is keyed off the provided keys.

## Trait Implementations

###

`impl Clone for SipHasher`

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####

`fn clone(&self) -> SipHasher`

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Returns a copy of the value. Read more

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

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Performs copy-assignment from `source`. Read more

###

`impl Default for SipHasher`

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####

`fn default() -> SipHasher`

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Returns the "default value" for a type. Read more

###

`impl Hasher for SipHasher`

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####

`fn write(&mut self, msg: &[u8])`

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Writes some data into this `Hasher`. Read more

####

`fn finish(&self) -> u64`

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Returns the hash value for the values written so far. Read more

####

`fn write_u8(&mut self, i: u8)`

1.3.0
[src]

Writes a single `u8` into this hasher.

####

`fn write_u16(&mut self, i: u16)`

1.3.0
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Writes a single `u16` into this hasher.

####

`fn write_u32(&mut self, i: u32)`

1.3.0
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Writes a single `u32` into this hasher.

####

`fn write_u64(&mut self, i: u64)`

1.3.0
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Writes a single `u64` into this hasher.

####

`fn write_u128(&mut self, i: u128)`

1.26.0
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Writes a single `u128` into this hasher.

####

`fn write_usize(&mut self, i: usize)`

1.3.0
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Writes a single `usize` into this hasher.

####

`fn write_i8(&mut self, i: i8)`

1.3.0
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Writes a single `i8` into this hasher.

####

`fn write_i16(&mut self, i: i16)`

1.3.0
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Writes a single `i16` into this hasher.

####

`fn write_i32(&mut self, i: i32)`

1.3.0
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Writes a single `i32` into this hasher.

####

`fn write_i64(&mut self, i: i64)`

1.3.0
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Writes a single `i64` into this hasher.

####

`fn write_i128(&mut self, i: i128)`

1.26.0
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Writes a single `i128` into this hasher.

####

`fn write_isize(&mut self, i: isize)`

1.3.0
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Writes a single `isize` into this hasher.

###

`impl Debug for SipHasher`

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####

`fn fmt(&self, f: &mut Formatter) -> Result`

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Formats the value using the given formatter. Read more

## Auto Trait Implementations

###

`impl Send for SipHasher`

###

`impl Sync for SipHasher`

## Blanket Implementations

###

`impl<T, U> Into for T where U: From<T>,`

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####

`fn into(Self) -> U`

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Performs the conversion.

###

`impl<T> From for T`

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####

`fn from(T) -> T`

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Performs the conversion.

###

`impl<T, U> TryInto for T where U: TryFrom<T>,`

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

🔬 This is a nightly-only experimental API. (`try_from` #33417)

The type returned in the event of a conversion error.

####

`fn try_into(Self) -> Result<U, <U as TryFrom<T>>::Error>`

[src]

🔬 This is a nightly-only experimental API. (`try_from` #33417)

Performs the conversion.

###

`impl<T, U> TryFrom for T where T: From<U>,`

[src]

#### `type Error = !`

🔬 This is a nightly-only experimental API. (`try_from` #33417)

The type returned in the event of a conversion error.

####

`fn try_from(U) -> Result<T, <T as TryFrom<U>>::Error>`

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🔬 This is a nightly-only experimental API. (`try_from` #33417)

Performs the conversion.

###

`impl<T> Borrow for T where T: ?Sized,`

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####

`fn borrow(&Self) -> &T`

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Immutably borrows from an owned value. Read more

###

`impl<T> BorrowMut for T where T: ?Sized,`

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####

`fn borrow_mut(&mut Self) -> &mut T`

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Mutably borrows from an owned value. Read more

###

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

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####

`fn get_type_id(&Self) -> TypeId`

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🔬 This is a nightly-only experimental API. (`get_type_id` #27745)

this method will likely be replaced by an associated static

Gets the `TypeId` of `self`. Read more

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