Struct lru_map::LRUMap

pub struct LRUMap<K, T, const N: usize> { /* fields omitted */ }

LRU map

Implementations

impl<K, T, const N: usize> LRUMap<K, T, N> where
    K: Hash + Eq + Clone, 

pub fn put(&mut self, key: K, value: T) -> Option<T>

Put a key-value pair Returns the old value if the key exists, otherwise returns None

pub fn get(&mut self, key: &K) -> Option<&T>

get the key-value pair and touch it

pub fn get_mut(&mut self, key: &K) -> Option<&mut T>

get the key-value pair and touch it

pub fn remove_one(&mut self, key: &K)

Remove a key

pub fn remove<F>(&mut self, pred: F) where
    F: FnMut(&K) -> bool, 

Remove keys which match the predicate.

pub fn clear(&mut self)

Clear the LRU Cache

pub fn len(&self) -> usize

Number of items

pub fn touch<F>(&mut self, pred: F) where
    F: FnMut(&K) -> bool, 

Touch the keys which match the predicate.

pub fn iter(&self) -> Iter<'_, (K, T), N>

Iterator for keys and values

pub fn keys(&self) -> impl Iterator<Item = &K>

Iterator for keys

Trait Implementations

impl<K: Debug, T: Debug, const N: usize> Debug for LRUMap<K, T, N>

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

Formats the value using the given formatter.

impl<K: Default, T: Default, const N: usize> Default for LRUMap<K, T, N>

fn default() -> LRUMap<K, T, N>

Returns the “default value” for a type.