Struct FifoMap 

pub struct FifoMap<K, V> { /* private fields */ }

Implementations

impl<K: Hash + Eq, V> FifoMap<K, V>

pub fn new(capacity: usize) -> Self

pub fn capacity(&self) -> usize

pub fn len(&self) -> usize

pub fn clear(&mut self)

pub fn is_empty(&self) -> bool

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

Insert a key/value. If K is new and we’re full, evict the oldest (FIFO) Returns a tuple of (old_value, evicted_key):

• old_value: The previous value if this was an update to an existing key
• evicted_key: The key that was evicted if the map was at capacity

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

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

pub fn contains_key(&self, key: &K) -> bool

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

Removes a key from the map, returning the value if present.

pub fn iter(&self) -> impl ExactSizeIterator<Item = (&K, &V)>

Trait Implementations

impl<K: Clone, V: Clone> Clone for FifoMap<K, V>

fn clone(&self) -> FifoMap<K, V>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

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

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

Formats the value using the given formatter.

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

fn default() -> Self

Returns the “default value” for a type.