UnmodifiableMapView<K, V> class

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
Mixed-in types
Implementers

Constructors

UnmodifiableMapView(Map<K, V> map)
Creates a new instance of UnmodifiableMapView
const

Properties

entries → Iterable<MapEntry<K, V>>
The map entries of this Map.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
internalMap → Map<K, V>
The internal representation of the unmodifiable map. Not guarunteed to be unmodifiable.
finalinherited
isEmpty → bool
Whether there is no key/value pair in the map.
no setterinherited
isNotEmpty → bool
Whether there is at least one key/value pair in the map.
no setterinherited
keys → Iterable<K>
The keys of this Map.
no setterinherited
length → int
The number of key/value pairs in the map.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
values → Iterable<V>
The values of this Map.
no setterinherited

Methods

addAll(Map<K, V> other) → void
This operation is not supported by an unmodifiable map.
inherited
addEntries(Iterable<MapEntry<K, V>> entries) → void
This operation is not supported by an unmodifiable map.
inherited
cast<RK, RV>() → UnmodifiableMapView<RK, RV>
Provides a view of this map as having RK keys and RV instances, if necessary.
override
clear() → void
This operation is not supported by an unmodifiable map.
inherited
containsKey(Object? key) → bool
Whether this map contains the given key.
inherited
containsValue(Object? value) → bool
Whether this map contains the given value.
inherited
forEach(Value2Callback<K, V, void> action) → void
Applies action to each key/value pair of the map.
inherited
map<K2, V2>(Value2Callback<K, V, MapEntry<K2, V2>> transform) → Map<K2, V2>
Returns a new map where all entries of this map are transformed by the given convert function.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
putIfAbsent(K key, Callback<V> ifAbsent) → V
This operation is not supported by an unmodifiable map.
inherited
remove(Object? key) → V?
This operation is not supported by an unmodifiable map.
inherited
removeWhere(Value2Callback<K, V, bool> test) → void
This operation is not supported by an unmodifiable map.
inherited
toString() → String
A string representation of this object.
inherited
update(K key, Value1Callback<V, V> update, {Callback<V>? ifAbsent}) → V
This operation is not supported by an unmodifiable map.
inherited
updateAll(Value2Callback<K, V, V> update) → void
This operation is not supported by an unmodifiable map.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator [](Object? key) → V?
The value for the given key, or null if key is not in the map.
inherited
operator []=(K key, V value) → void
This operation is not supported by an unmodifiable map.
inherited