Struct twox_hash::XxHash32

pub struct XxHash32 { /* private fields */ }

Calculates the 32-bit hash. Care should be taken when using this hash.

Although this struct implements Hasher, it only calculates a 32-bit number, leaving the upper bits as 0. This means it is unlikely to be correct to use this in places like a HashMap.

Implementations

impl XxHash32

pub fn with_seed(seed: u32) -> XxHash32

Constructs the hash with an initial seed

pub fn seed(&self) -> u32

pub fn total_len(&self) -> u32

Get the total number of bytes hashed, truncated to 32 bits. For the full 64-bit byte count, use total_len_64

pub fn total_len_64(&self) -> u64

Get the total number of bytes hashed.

Trait Implementations

impl Clone for XxHash32

fn clone(&self) -> XxHash32

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for XxHash32

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

Formats the value using the given formatter.

impl Default for XxHash32

fn default() -> XxHash32

Returns the “default value” for a type.

impl FixedOutput for XxHash32

fn finalize_into(self, out: &mut Output<Self>)

Consume value and write result into provided array.

fn finalize_fixed(self) -> GenericArray<u8, Self::OutputSize>

Retrieve result and consume the hasher instance.

impl Hasher for XxHash32

fn finish(&self) -> u64

Returns the hash value for the values written so far.

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

Writes some data into this Hasher.

fn write_u8(&mut self, i: u8)

Writes a single u8 into this hasher.

fn write_u16(&mut self, i: u16)

Writes a single u16 into this hasher.

fn write_u32(&mut self, i: u32)

Writes a single u32 into this hasher.

fn write_u64(&mut self, i: u64)

Writes a single u64 into this hasher.

fn write_u128(&mut self, i: u128)

Writes a single u128 into this hasher.

fn write_usize(&mut self, i: usize)

Writes a single usize into this hasher.

fn write_i8(&mut self, i: i8)

Writes a single i8 into this hasher.

fn write_i16(&mut self, i: i16)

Writes a single i16 into this hasher.

fn write_i32(&mut self, i: i32)

Writes a single i32 into this hasher.

fn write_i64(&mut self, i: i64)

Writes a single i64 into this hasher.

fn write_i128(&mut self, i: i128)

Writes a single i128 into this hasher.

fn write_isize(&mut self, i: isize)

Writes a single isize into this hasher.

fn write_length_prefix(&mut self, len: usize)

🔬This is a nightly-only experimental API. (hasher_prefixfree_extras)

Writes a length prefix into this hasher, as part of being prefix-free.

fn write_str(&mut self, s: &str)

🔬This is a nightly-only experimental API. (hasher_prefixfree_extras)

Writes a single str into this hasher.

impl OutputSizeUser for XxHash32

type OutputSize = UInt<UInt<UInt<UTerm, B1>, B0>, B0>

Size of the output in bytes.

fn output_size() -> usize

Return output size in bytes.

impl PartialEq<XxHash32> for XxHash32

fn eq(&self, other: &XxHash32) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Update for XxHash32

fn update(&mut self, data: &[u8])

Update state using the provided data.

fn chain(self, data: impl AsRef<[u8]>) -> Selfwhere
    Self: Sized,

Digest input data in a chained manner.

impl Copy for XxHash32

impl HashMarker for XxHash32

impl StructuralPartialEq for XxHash32