Struct FxHasher 

pub struct FxHasher { /* private fields */ }

A non-cryptographic hasher: rotate, xor, multiply, per word.

Not collision-resistant, and not seeded. See the module docs for which keys may and may not use it. Deterministic across runs and across machines, which is a property this workspace happens to want elsewhere too — nothing in a golden or a scoreboard may depend on a hash order, and with a fixed hasher a map iteration that accidentally did would at least fail reproducibly rather than one run in ten.

Trait Implementations

impl Clone for FxHasher

fn clone(&self) -> FxHasher

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FxHasher

impl Debug for FxHasher

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

Formats the value using the given formatter.

impl Default for FxHasher

fn default() -> FxHasher

Returns the “default value” for a type.

impl Hasher for FxHasher

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, n: u8)

Writes a single u8 into this hasher.

fn write_u16(&mut self, n: u16)

Writes a single u16 into this hasher.

fn write_u32(&mut self, n: u32)

Writes a single u32 into this hasher.

fn write_u64(&mut self, n: u64)

Writes a single u64 into this hasher.

fn write_usize(&mut self, n: usize)

Writes a single usize into this hasher.

fn write_i32(&mut self, n: i32)

Writes a single i32 into this hasher.

fn write_u128(&mut self, i: u128)

Writes a single u128 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_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.