Struct MultiMap 

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

A simple multi-map: each key may map to multiple values.

Implementations

impl<K: Eq, V> MultiMap<K, V>

pub fn new() -> Self

Create an empty multi-map.

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

Insert a (key, value) pair.

pub fn get(&self, key: &K) -> &[V]

Return all values associated with key.

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

Return true if key has at least one associated value.

pub fn key_count(&self) -> usize

Return the number of distinct keys.

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

Remove all entries for key. Returns the removed values.

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

Iterate over (key, values) pairs.

Trait Implementations

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

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

Formats the value using the given formatter.

impl<K, V> Default for MultiMap<K, V>

fn default() -> Self

Returns the “default value” for a type.