Enum Entry

pub enum Entry<'a, T: IdHashItem, S = DefaultHashBuilder, A: Allocator = Global> {
    Vacant(VacantEntry<'a, T, S, A>),
    Occupied(OccupiedEntry<'a, T, S, A>),
}

An implementation of the Entry API for IdHashMap.

Variants

Vacant(VacantEntry<'a, T, S, A>)

A vacant entry.

Occupied(OccupiedEntry<'a, T, S, A>)

An occupied entry.

Implementations

impl<'a, T: IdHashItem, S: Clone + BuildHasher, A: Allocator> Entry<'a, T, S, A>

pub fn or_insert(self, default: T) -> RefMut<'a, T, S>

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

Panics

Panics if the key hashes to a different value than the one passed into IdHashMap::entry.

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

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.

Panics

Panics if the key hashes to a different value than the one passed into IdHashMap::entry.

pub fn and_modify<F>(self, f: F) -> Self

where F: FnOnce(RefMut<'_, T, S>),

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

Trait Implementations

impl<'a, T: IdHashItem, S, A: Allocator> Debug for Entry<'a, T, S, A>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.