KtMutableMap<K, V> class abstract

A modifiable collection that holds pairs of objects (keys and values) and supports efficiently retrieving the value corresponding to each key. Map keys are unique; the map holds only one value for each key. @param K the type of map keys. The map is invariant on its key type. @param V the type of map values. The mutable map is invariant on its value type.

Implemented types

• KtMap<K, V>

Implementers

• KtHashMap
• KtLinkedMap

Available extensions

• KtMapExtensions
• KtMutableMapExtensions

Constructors

KtMutableMap.empty()

factory

KtMutableMap.from([Map<K, V> map = const {}])

factory

Properties

entries → KtMutableSet<KtMutableMapEntry<K, V>>

Returns a KtMutableSet of all key/value pairs in this map.

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

iter → Iterable<KtMapEntry<K, V>>

Access to a Iterable to be used in for-loops

no setter, inherited

keys → KtMutableSet<K>

Returns a KtMutableSet of all keys in this map.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

size → int

Returns the number of key/value pairs in the map.

no setter, inherited

values → KtMutableCollection<V>

Returns a KtMutableCollection of all values in this map. Note that this collection may contain duplicate values.

no setter, override

Methods

asMap() → Map<K, V>

Creates a Map instance that wraps the original KtMap. It acts as a view.

override

clear() → void

Removes all elements from this map.

containsKey(K key) → bool

Returns true if the map contains the specified key.

inherited

containsValue(V value) → bool

Returns true if the map maps one or more keys to the specified value.

inherited

get(K key) → V?

Returns the value corresponding to the given key, or null if such a key is not present in the map.

inherited

getOrDefault(K key, V defaultValue) → V

Returns the value corresponding to the given key, or defaultValue if such a key is not present in the map.

inherited

isEmpty() → bool

Returns true if the map is empty (contains no elements), false otherwise.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

put(K key, V value) → V?

Associates the specified value with the specified key in the map.

putAll(KtMap<K, V> from) → void

Updates this map with key/value pairs from the specified map from.

remove(K key) → V?

Removes the specified key and its corresponding value from this map.

removeMapping(K key, V value) → bool

Removes the entry for the specified key only if it is mapped to the specified value.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

operator [](K key) → V?

Returns the value corresponding to the given key, or null if such a key is not present in the map.

inherited

operator []=(K key, V value) → void

Associates the specified value with the specified key in the map.