Trait CacheBacking

pub trait CacheBacking<K, V>
where
    K: Eq + Hash + Sized + Clone + Send,
    V: Sized + Clone + Send,
{
    type Meta: Clone + Send;

    // Required methods
    fn get_mut(&mut self, key: &K) -> Result<Option<&mut V>, BackingError>;
    fn get(&mut self, key: &K) -> Result<Option<&V>, BackingError>;
    fn set(
        &mut self,
        key: K,
        value: V,
        meta: Option<Self::Meta>,
    ) -> Result<Option<V>, BackingError>;
    fn remove(&mut self, key: &K) -> Result<Option<V>, BackingError>;
    fn contains_key(&mut self, key: &K) -> Result<bool, BackingError>;
    fn remove_if(
        &mut self,
        predicate: Box<dyn Fn((&K, &V)) -> bool + Send + Sync + 'static>,
    ) -> Result<Vec<(K, V)>, BackingError>;
    fn clear(&mut self) -> Result<(), BackingError>;
}

Required Associated Types

type Meta: Clone + Send

Required Methods

fn get_mut(&mut self, key: &K) -> Result<Option<&mut V>, BackingError>

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

fn set( &mut self, key: K, value: V, meta: Option<Self::Meta>, ) -> Result<Option<V>, BackingError>

fn remove(&mut self, key: &K) -> Result<Option<V>, BackingError>

fn contains_key(&mut self, key: &K) -> Result<bool, BackingError>

fn remove_if( &mut self, predicate: Box<dyn Fn((&K, &V)) -> bool + Send + Sync + 'static>, ) -> Result<Vec<(K, V)>, BackingError>

fn clear(&mut self) -> Result<(), BackingError>

Implementors

impl<K: Eq + Hash + Sized + Clone + Send, V: Sized + Clone + Send> CacheBacking<K, V> for HashMapBacking<K, V>

type Meta = NoMeta