[−][src]Enum indexmap::map::Entry

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

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).

Methods

impl<'a, K, V> Entry<'a, K, V>[src]

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

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

pub fn or_insert_with<F>(self, call: F) -> &'a mut V where
    F: FnOnce() -> V, [src]

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

pub fn key(&self) -> &K[src]

pub fn index(&self) -> usize[src]

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

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

Modifies the entry if it is occupied.

pub fn or_default(self) -> &'a mut V where
    V: Default, [src]

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).

Auto Trait Implementations

impl<'a, K, V> Send for Entry<'a, K, V> where
    K: Send,
    V: Send, 

impl<'a, K, V> Sync for Entry<'a, K, V> where
    K: Sync,
    V: Sync, 

Blanket Implementations

impl<T> From for T[src]

impl<T, U> Into for T where
    U: From<T>, [src]

impl<T, U> TryFrom for T where
    T: From<U>, [src]

type Error = !

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized, [src]

impl<T> BorrowMut for T where
    T: ?Sized, [src]

impl<T, U> TryInto for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> Any for T where
    T: 'static + ?Sized, [src]