Enum dense_map::Entry

pub enum Entry<'a, K, T> {
    Vacant(VacantEntry<'a, K, T>),
    Occupied(OccupiedEntry<'a, K, T>),
}

A view into an in-place entry in a map that can be vacant or occupied.

Variants

Vacant(VacantEntry<'a, K, T>)

A vacant entry.

Occupied(OccupiedEntry<'a, K, T>)

An occupied entry.

Implementations

impl<'a, K: EntryKey, T> Entry<'a, K, T>

pub fn key(&self) -> &K

Returns a reference to this entry’s key.

pub fn or_insert(self, default: T) -> &'a mut T

where K: EntryKey,

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

pub fn or_insert_with<F: FnOnce() -> T>(self, f: F) -> &'a mut T

where K: EntryKey,

Ensures a value is in the entry by inserting the result of the function f if empty, and returns a mutable reference to the value in the entry.

pub fn or_default(self) -> &'a mut T

where T: Default, K: EntryKey,

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

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

Provides in-place mutable access to an occupied entry before any potential inserts into the map.

pub fn remove(self) -> Option<T>

Remove the entry from DenseMap.