Struct std::collections::hash_map::RandomState
pub struct RandomState { /* fields omitted */ }
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);
Implementations
impl RandomState
pub fn new() -> RandomState
Constructs a new RandomState that is initialized with random keys.
Examples
use std::collections::hash_map::RandomState; let s = RandomState::new();
Trait Implementations
impl BuildHasher for RandomState
type Hasher = DefaultHasher
Type of the hasher that will be created.
fn build_hasher(&self) -> DefaultHasher
Creates a new hasher. Read more
Calculates the hash of a single value. Read more
impl Clone for RandomState
fn clone(&self) -> RandomState
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
impl Debug for RandomState
fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
impl Default for 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
impl<T> From<T> for T
pub fn from(t: T) -> T
Performs the conversion.
pub fn into(self) -> U
Performs the conversion.
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
pub fn clone_into(&self, target: &mut T)
toowned_clone_into #41263)recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
Performs the conversion.
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
Performs the conversion.
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/collections/hash_map/struct.RandomState.html