View of a Map that disallow modifying the map.

A wrapper around a Map that forwards all members to the map provided in the constructor, except for operations that modify the map. Modifying operations throw instead.

Inheritance

Properties

isEmpty → bool
read-only, inherited

isNotEmpty → bool
read-only, inherited

keys → Iterable<K>
read-only, inherited

length → int
read-only, inherited

values → Iterable<V>
read-only, inherited

Constructors

UnmodifiableMapView(Map<K,V> map)
const

Operators

operator [](Object key) → V
inherited

Returns the value for the given key or null if key is not in the map.…

operator []=(K key, V value) → void
inherited

Associates the key with the given value.…

Methods

addAll(Map<K,V> other) → void
inherited

Adds all key-value pairs of other to this map.…

clear() → void
inherited

Removes all pairs from the map.…

containsKey(Object key) → bool
inherited

Returns true if this map contains the given key.…

containsValue(Object value) → bool
inherited

Returns true if this map contains the given value.…

forEach(void action(K key, V value)) → void
inherited

Applies f to each key-value pair of the map.…

putIfAbsent(K key, V ifAbsent()) → V
inherited

Look up the value of key, or add a new value if it isn't there.…

remove(Object key) → V
inherited

Removes key and its associated value, if present, from the map.…

toString() → String
inherited

Returns a string representation of this object.