Struct TtlCache

pub struct TtlCache<K: Eq + Hash, V: Clone> { /* private fields */ }

A TTL cache where items get removed deterministically in the get() call.

Implementations

impl<K, V> TtlCache<K, V>

where K: Eq + Hash, V: Clone,

pub fn new() -> Self

Create a new, empty, TtlCache.

pub fn contains<Q>(&self, key: &Q) -> bool

where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

Does the cache contain an non-expired item with the matching key.

pub fn insert(&mut self, key: K, value: V)

Add a single item to the cache.

pub fn extend(&mut self, iterator: impl IntoIterator<Item = (K, V)>)

Extend the cache with the given iterator of items.

pub fn remove<Q>(&mut self, key: &Q) -> Option<V>

where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

Remove the item that matches the given key.

pub fn get<Q>(&mut self, key: &Q) -> Option<V>

where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

Get the item that matches the given key, if the item has expired None will be returned and the item will be evicted from the cache.

Trait Implementations

impl<K: Debug + Eq + Hash, V: Debug + Clone> Debug for TtlCache<K, V>

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

Formats the value using the given formatter.

impl<K: Eq + Hash, V: Clone> Default for TtlCache<K, V>

fn default() -> Self

Returns the “default value” for a type.