Enum prefix_trie::map::Entry

pub enum Entry<'a, P, T> {
    Vacant(VacantEntry<'a, P, T>),
    Occupied(OccupiedEntry<'a, P, T>),
}

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

Variants

Vacant(VacantEntry<'a, P, T>)

The entry is not present in the tree.

Occupied(OccupiedEntry<'a, P, T>)

The entry is already present in the tree.

Implementations

impl<'a, P, T> Entry<'a, P, T>

pub fn get(&self) -> Option<&T>

Get the value if it exists

pub fn get_mut(&mut self) -> Option<&mut T>

Get the value if it exists

pub fn key(&self) -> &P

get the key of the current entry

impl<'a, P, T> Entry<'a, P, T>where
    P: Prefix,

pub fn insert(self, v: T) -> Option<T>

Replace the current entry, and return the entry that was stored before.

pub fn or_insert(self, default: T) -> &'a mut T

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

pub fn or_insert_with<F: FnOnce() -> T>(self, default: F) -> &'a mut T

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.

pub fn and_modify<F: FnOnce(&mut T)>(self, f: F) -> Self

Provides in-place mutable access to an occupied entry before any potential inserts into the map.

impl<'a, P, T> Entry<'a, P, T>where
    P: Prefix,
    T: Default,

pub fn or_default(self) -> &'a mut T

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