std::collections::hash_map::RandomState - Rust
Description: API documentation for the Rust `RandomState` struct in crate `std`.
Keywords: rust, rustlang, rust-lang, RandomState

# Struct std::collections::hash_map::RandomState 1.7.0 [−] [src]

    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);Run

## Methods

### `impl RandomState`
[src]

#### `fn new() -> RandomState`

Constructs a new `RandomState` that is initialized with random keys.

# Examples

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

    let s = RandomState::new();Run

## Trait Implementations

### `impl Clone for RandomState`
[src]

#### `fn clone(&self) -> RandomState`

Returns a copy of the value. Read more

#### `fn clone_from(&mut self, source: &Self)`
1.0.0

Performs copy-assignment from `source`. Read more

### `impl BuildHasher for RandomState`
[src]

#### `type Hasher = DefaultHasher`

Type of the hasher that will be created.

#### `fn build_hasher(&self) -> DefaultHasher`

Creates a new hasher. Read more

### `impl Default for RandomState`
[src]

#### `fn default() -> RandomState`

Constructs a new `RandomState`.

### `impl Debug for RandomState`
1.16.0
[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`

Formats the value using the given formatter.

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