Struct MultiMap 

pub struct MultiMap<K: PartialEq + Clone, V: Clone> { /* private fields */ }

A map that associates each key with a list of values.

Implementations

impl<K: PartialEq + Clone, V: Clone> MultiMap<K, V>

pub fn new() -> Self

Create an empty multi-map.

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

Insert a value for a key (appends if key already exists).

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

Get all values for a key.

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

Remove all values for a key.

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

Check if a key has any values.

pub fn total_count(&self) -> usize

Total number of key-value associations.

pub fn key_count(&self) -> usize

Number of distinct keys.

pub fn is_empty(&self) -> bool

Check if empty.

pub fn clear(&mut self)

Clear the multi-map.

Trait Implementations

impl<K: Clone + PartialEq + Clone, V: Clone + Clone> Clone for MultiMap<K, V>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<K: Debug + PartialEq + Clone, V: Debug + Clone> Debug for MultiMap<K, V>

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

Formats the value using the given formatter.

impl<K: PartialEq + Clone, V: Clone> Default for MultiMap<K, V>

fn default() -> Self

Returns the “default value” for a type.