Struct VacantEntry 

pub struct VacantEntry<'a, K: 'a + WeakKey, V: 'a>(/* private fields */);

A vacant entry, which can be inserted in or viewed.

Implementations

impl<'a, K: WeakKey, V> VacantEntry<'a, K, V>

pub fn key(&self) -> &K::Strong

Gets a reference to the key that would be used when inserting a value through the VacantEntry.

O(1) time

pub fn into_key(self) -> K::Strong

Returns an owned reference to the key.

O(1) time

pub fn insert(self, value: V) -> &'a mut V

Inserts the key and value into the map and return a mutable reference to the value.

expected O(1) time; worst-case O(p) time

pub fn insert_entry(self, value: V) -> OccupiedEntry<'a, K, V>

Inserts the key and value into the map, returning an OccupiedEntry.

O(1) time

Trait Implementations

impl<'a, K, V> Debug for VacantEntry<'a, K, V>

where K: WeakKey, K::Strong: Debug, V: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.