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);

Implementations§

Constructs a new RandomState that is initialized with random keys.

Examples
use std::collections::hash_map::RandomState;

let s = RandomState::new();

Trait Implementations§

Type of the hasher that will be created.
Creates a new hasher. Read more
Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more

Constructs a new RandomState.

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
Converts self into T using Into<T>. Read more
Causes self to use its Binary implementation when Debug-formatted. Read more
Causes self to use its Display implementation when Debug-formatted. Read more
Causes self to use its LowerExp implementation when Debug-formatted. Read more
Causes self to use its LowerHex implementation when Debug-formatted. Read more
Causes self to use its Octal implementation when Debug-formatted. Read more
Causes self to use its Pointer implementation when Debug-formatted. Read more
Causes self to use its UpperExp implementation when Debug-formatted. Read more
Causes self to use its UpperHex implementation when Debug-formatted. Read more
Formats each item in a sequence. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Pipes by value. This is generally the method you want to use. Read more
Borrows self and passes that borrow into the pipe function. Read more
Mutably borrows self and passes that borrow into the pipe function. Read more
Borrows self, then passes self.borrow() into the pipe function. Read more
Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
Borrows self, then passes self.as_ref() into the pipe function.
Mutably borrows self, then passes self.as_mut() into the pipe function. Read more
Borrows self, then passes self.deref() into the pipe function.
Mutably borrows self, then passes self.deref_mut() into the pipe function. Read more
Immutable access to a value. Read more
Mutable access to a value. Read more
Immutable access to the Borrow<B> of a value. Read more
Mutable access to the BorrowMut<B> of a value. Read more
Immutable access to the AsRef<R> view of a value. Read more
Mutable access to the AsMut<R> view of a value. Read more
Immutable access to the Deref::Target of a value. Read more
Mutable access to the Deref::Target of a value. Read more
Calls .tap() only in debug builds, and is erased in release builds.
Calls .tap_mut() only in debug builds, and is erased in release builds. Read more
Calls .tap_borrow() only in debug builds, and is erased in release builds. Read more
Calls .tap_borrow_mut() only in debug builds, and is erased in release builds. Read more
Calls .tap_ref() only in debug builds, and is erased in release builds. Read more
Calls .tap_ref_mut() only in debug builds, and is erased in release builds. Read more
Calls .tap_deref() only in debug builds, and is erased in release builds. Read more
Calls .tap_deref_mut() only in debug builds, and is erased in release builds. Read more
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
Attempts to convert self into T using TryInto<T>. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.