[−][src]Struct rustc_ap_rustc_data_structures::fx::FxHasher
A speedy hash algorithm for use within rustc. The hashmap in liballoc by default uses SipHash which isn't quite as speedy as we want. In the compiler we're not really worried about DOS attempts, so we use a fast non-cryptographic hash.
This is the same as the algorithm used by Firefox -- which is a homespun one not based on any widely-known algorithm -- though modified to produce 64-bit hash values instead of 32-bit hash values. It consistently out-performs an FNV-based hash within rustc itself -- the collision rate is similar or slightly worse than FNV, but the speed of the hash function itself is much higher because it works on up to 8 bytes at a time.
Trait Implementations
impl Default for FxHasher
[src]
impl Hasher for FxHasher
[src]
fn write(&mut self, bytes: &[u8])
[src]
fn write_u8(&mut self, i: u8)
[src]
fn write_u16(&mut self, i: u16)
[src]
fn write_u32(&mut self, i: u32)
[src]
fn write_u64(&mut self, i: u64)
[src]
fn write_usize(&mut self, i: usize)
[src]
fn finish(&self) -> u64
[src]
fn write_u128(&mut self, i: u128)
1.26.0[src]
fn write_i8(&mut self, i: i8)
1.3.0[src]
fn write_i16(&mut self, i: i16)
1.3.0[src]
fn write_i32(&mut self, i: i32)
1.3.0[src]
fn write_i64(&mut self, i: i64)
1.3.0[src]
fn write_i128(&mut self, i: i128)
1.26.0[src]
fn write_isize(&mut self, i: isize)
1.3.0[src]
Auto Trait Implementations
impl Sync for FxHasher
impl Unpin for FxHasher
impl Send for FxHasher
impl UnwindSafe for FxHasher
impl RefUnwindSafe for FxHasher
Blanket Implementations
impl<T> Erased for T
[src]
impl<T> From<T> for T
[src]
impl<T, U> Into<U> for T where
U: From<T>,
[src]
U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
[src]
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>
[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
[src]
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>
[src]
impl<T> Borrow<T> for T where
T: ?Sized,
[src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
T: ?Sized,
ⓘImportant traits for &'_ mut Ifn borrow_mut(&mut self) -> &mut T
[src]
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,