Enum Entry 

pub enum Entry<'a, K: 'a, V: 'a, S: 'a> {
    Occupied(Occupied<'a, K, V, S>),
    Vacant(Vacant<'a, K, V, S>),
}

A map’s entry.

Variants

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

An occupied entry.

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

A vacant (empty) entry.

Implementations

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

where K: Eq + Hash + 'a, S: BuildHasher + 'a,

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

Returns a mutable reference to a value if the entry exists, or creates a new entry using a given closure if it doesn’t exist yet and returns a reference to a newly created entry’s value.

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

where F: FnOnce() -> V,

Returns a mutable reference to a value if the entry exists, or creates a new entry with a given value if it doesn’t exist yet and returns a reference to a newly created entry’s value.