Type Alias Entry 

pub type Entry<'a, K, V, S = RandomState> = Entry<'a, K, V, S>;

A view into a single entry in a map, which may either be vacant or occupied.

See Entry for more information.

Aliased Type

pub enum Entry<'a, K, V, S = RandomState> {
    Occupied(OccupiedEntry<'a, K, V, S>),
    Vacant(VacantEntry<'a, K, V, S>),
}

Variants

Occupied(OccupiedEntry<'a, K, V, S>)

An occupied entry.

Examples

use hashbrown::hash_map::{Entry, HashMap};
let mut map: HashMap<_, _> = [("a", 100), ("b", 200)].into();

match map.entry("a") {
    Entry::Vacant(_) => unreachable!(),
    Entry::Occupied(_) => { }
}

Vacant(VacantEntry<'a, K, V, S>)

A vacant entry.

Examples

use hashbrown::hash_map::{Entry, HashMap};
let mut map: HashMap<&str, i32> = HashMap::new();

match map.entry("a") {
    Entry::Occupied(_) => unreachable!(),
    Entry::Vacant(_) => { }
}