Enum Entry 

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

A view into a single entry in a map, similar to std::collections::hash_map::Entry.

Variants

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

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

Implementations

impl<'a, K, V, S> Entry<'a, K, V, S>

where K: Hash + Eq, S: BuildHasher,

pub fn key(&self) -> &K

Returns a reference to this entry’s key.

pub fn or_insert(self, default: V) -> &'a mut V

Ensures a value is in the entry by inserting default if vacant, and returns a mutable reference to the value in the entry.

pub fn or_insert_with<F: FnOnce() -> V>(self, default: F) -> &'a mut V

Ensures a value is in the entry by inserting the result of default if vacant, and returns a mutable reference to the value in the entry.

pub fn or_default(self) -> &'a mut V

where V: Default,

Ensures a value is in the entry by inserting Default::default if vacant, and returns a mutable reference to the value in the entry.

pub fn and_modify<F: FnOnce(&mut V)>(self, f: F) -> Self

Provides in-place mutable access to an occupied entry before any potential insertion.

Trait Implementations

impl<K: Send, V: Send, S: Send> Send for Entry<'_, K, V, S>

impl<K: Sync, V: Sync, S: Sync> Sync for Entry<'_, K, V, S>