Struct MetaCache 

pub struct MetaCache<K, V> {
    pub entries: HashMap<K, V>,
    pub capacity: usize,
    pub hits: u64,
    pub misses: u64,
}

A simple cache for memoizing meta computations.

Fields

entries: HashMap<K, V>

capacity: usize

hits: u64

misses: u64

Implementations

impl<K: Hash + Eq + Clone, V> MetaCache<K, V>

pub fn with_capacity(capacity: usize) -> Self

Create a cache with a given capacity.

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

Insert a value.

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

Look up a value.

pub fn hit_rate(&self) -> f64

Cache hit rate.

pub fn len(&self) -> usize

Number of entries.

pub fn is_empty(&self) -> bool

Whether empty.

pub fn clear(&mut self)

Clear the cache.

Trait Implementations

impl<K: Debug, V: Debug> Debug for MetaCache<K, V>

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

Formats the value using the given formatter.