Struct std::collections::hash_map::RandomState
1.7.0 · source · [−]pub struct RandomState { /* private fields */ }
Expand description
RandomState
is the default state for HashMap
types.
A particular instance RandomState
will create the same instances of
Hasher
, but the hashers created by two different RandomState
instances are unlikely to produce the same result for the same values.
Examples
use std::collections::HashMap;
use std::collections::hash_map::RandomState;
let s = RandomState::new();
let mut map = HashMap::with_hasher(s);
map.insert(1, 2);
RunImplementations
sourceimpl RandomState
impl RandomState
sourcepub fn new() -> RandomState
pub fn new() -> RandomState
Trait Implementations
sourceimpl BuildHasher for RandomState
impl BuildHasher for RandomState
type Hasher = DefaultHasher
type Hasher = DefaultHasher
Type of the hasher that will be created.
sourcefn build_hasher(&self) -> DefaultHasher
fn build_hasher(&self) -> DefaultHasher
Creates a new hasher. Read more
sourceimpl Clone for RandomState
impl Clone for RandomState
sourcefn clone(&self) -> RandomState
fn clone(&self) -> RandomState
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
1.16.0 · sourceimpl Debug for RandomState
impl Debug for RandomState
sourceimpl Default for RandomState
impl Default for RandomState
sourcefn default() -> RandomState
fn default() -> RandomState
Constructs a new RandomState
.
Auto Trait Implementations
impl RefUnwindSafe for RandomState
impl Send for RandomState
impl Sync for RandomState
impl Unpin for RandomState
impl UnwindSafe for RandomState
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
Uses borrowed data to replace owned data, usually by cloning. Read more