pub enum Entry<'a, K, V> {
    Occupied(OccupiedEntry<'a, K, V>),
    Vacant(VacantEntry<'a, K, V>),
}
Expand description

Entry for an existing key-value pair or a vacant location to insert one.

Variants

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

Existing slot with equivalent key.

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

Vacant slot (no equivalent key in the map).

Implementations

Inserts the given default value in the entry if it is vacant and returns a mutable reference to it. Otherwise a mutable reference to an already existent value is returned.

Computes in O(1) time (amortized average).

Inserts the result of the call function in the entry if it is vacant and returns a mutable reference to it. Otherwise a mutable reference to an already existent value is returned.

Computes in O(1) time (amortized average).

Inserts the result of the call function with a reference to the entry’s key if it is vacant, and returns a mutable reference to the new value. Otherwise a mutable reference to an already existent value is returned.

Computes in O(1) time (amortized average).

Gets a reference to the entry’s key, either within the map if occupied, or else the new key that was used to find the entry.

Return the index where the key-value pair exists or will be inserted.

Modifies the entry if it is occupied.

Inserts a default-constructed value in the entry if it is vacant and returns a mutable reference to it. Otherwise a mutable reference to an already existent value is returned.

Computes in O(1) time (amortized average).

Trait Implementations

Formats the value using the given formatter. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.