Struct LruCache
pub struct LruCache<T>{ /* private fields */ }
Expand description
A minimal LRU cache based on a LruMap
with limited capacity.
If the length exceeds the set capacity, the oldest element will be removed In the limit, for each element inserted the oldest existing element will be removed.
Implementations§
§impl<T> LruCache<T>
impl<T> LruCache<T>
pub fn insert(&mut self, entry: T) -> bool
pub fn insert(&mut self, entry: T) -> bool
Insert an element into the set.
This operation uses get_or_insert
from the underlying schnellru::LruMap
which:
- Automatically evicts the least recently used item if capacity is exceeded
This method is more efficient than insert_and_get_evicted
as it performs fewer checks. Use this method when you don’t need information about
evicted values.
If the set did not have this value present, true is returned. If the set did have this value present, false is returned.
pub fn insert_and_get_evicted(&mut self, entry: T) -> (bool, Option<T>)
pub fn insert_and_get_evicted(&mut self, entry: T) -> (bool, Option<T>)
Same as insert
but returns a tuple, where the second index is the evicted
value, if one was evicted.
pub fn get(&mut self, entry: &T) -> Option<&T>
pub fn get(&mut self, entry: &T) -> Option<&T>
Gets the given element, if exists, and promotes to lru.
pub fn remove(&mut self, value: &T) -> bool
pub fn remove(&mut self, value: &T) -> bool
Expels the given value. Returns true if the value existed.
Trait Implementations§
§impl<T> Extend<T> for LruCache<T>
impl<T> Extend<T> for LruCache<T>
§fn extend<I>(&mut self, iter: I)where
I: IntoIterator<Item = T>,
fn extend<I>(&mut self, iter: I)where
I: IntoIterator<Item = T>,
Source§fn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
extend_one
#72631)Auto Trait Implementations§
impl<T> Freeze for LruCache<T>
impl<T> RefUnwindSafe for LruCache<T>where
T: RefUnwindSafe,
impl<T> Send for LruCache<T>where
T: Send,
impl<T> Sync for LruCache<T>where
T: Sync,
impl<T> Unpin for LruCache<T>where
T: Unpin,
impl<T> UnwindSafe for LruCache<T>where
T: UnwindSafe,
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Size: 88 bytes