Enum collections::vec_map::Entry

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

A view into a single entry in a map, which may either be vacant or occupied.

Variants

Vacant	A vacant Entry
Occupied	An occupied Entry

Methods

impl<'a, V> Entry<'a, V>

fn get(self) -> Result<&'a mut V, VacantEntry<'a, V>>

Deprecated since 1.0

: replaced with more ergonomic or_insert and or_insert_with

Returns a mutable reference to the entry if occupied, or the VacantEntry if vacant

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

Unstable

: matches entry v3 specification, waiting for dust to settle

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

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

Unstable

: matches entry v3 specification, waiting for dust to settle

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