Trait CacheStore

pub trait CacheStore {
    type Key;
    type Value;

    // Required methods
    fn get(&self, key: impl Borrow<Self::Key>) -> Option<Self::Value>;
    fn set(
        &mut self,
        key: impl Borrow<Self::Key>,
        value: impl Borrow<Self::Value>,
    );

    // Provided method
    fn exists(&self, key: impl Borrow<Self::Key>) -> bool { ... }
}

Trait for a infallible cache store

Required Associated Types

type Key

type Value

Required Methods

fn get(&self, key: impl Borrow<Self::Key>) -> Option<Self::Value>

Returns an option of the owned cache element if present

fn set(&mut self, key: impl Borrow<Self::Key>, value: impl Borrow<Self::Value>)

Sets a value given its key

Provided Methods

fn exists(&self, key: impl Borrow<Self::Key>) -> bool

Checks if the cache entry exists

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<K, V, A, S, F: Fn(&K, A) -> V> CacheStore for GenCacheStoreWrapper<K, V, A, S, F>

where S: CacheStore + CacheStore<Key = K, Value = V>,

type Key = <S as CacheStore>::Key

type Value = <S as CacheStore>::Value

impl<K: Hash + Eq + Sized + Clone, V: Clone> CacheStore for MemoryStore<K, V>

type Key = K

type Value = V