MapView class - dart:collection library (original) (raw)

Wrapper around a class that implements Map that only exposes Mapmembers.

A simple wrapper that delegates all Map members to the map provided in the constructor.

Base for delegating map implementations like UnmodifiableMapView.

Implemented types

Implementers

Constructors

MapView(Map<K, V> map)

Creates a view which forwards operations to map.

const

Properties

entries → Iterable<MapEntry<K, V>>

The map entries of this Map.

no setteroverride

hashCode → int

The hash code for this object.

no setterinherited

isEmpty → bool

Whether there is no key/value pair in the map.

no setteroverride

isNotEmpty → bool

Whether there is at least one key/value pair in the map.

no setteroverride

keys → Iterable<K>

The keys of this Map.

no setteroverride

length → int

The number of key/value pairs in the map.

no setteroverride

runtimeType → Type

A representation of the runtime type of the object.

no setterinherited

values → Iterable<V>

The values of this Map.

no setteroverride

Methods

addAll(Map<K, V> other)→ void

Adds all key/value pairs of other to this map.

override

addEntries(Iterable<MapEntry<K, V>> entries)→ void

Adds all key/value pairs of newEntries to this map.

override

cast<RK, RV>()→ Map<RK, RV>

Provides a view of this map as having RK keys and RV instances, if necessary.

override

clear()→ void

Removes all entries from the map.

override

containsKey(Object? key)→ bool

Whether this map contains the given key.

override

containsValue(Object? value)→ bool

Whether this map contains the given value.

override

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

Applies action to each key/value pair of the map.

override

map<K2, V2>(MapEntry<K2, V2> transform(K key, V value))→ Map<K2, V2>

Returns a new map where all entries of this map are transformed by the given convert function.

override

noSuchMethod(Invocation invocation)→ dynamic

Invoked when a nonexistent method or property is accessed.

inherited

putIfAbsent(K key, V ifAbsent())→ V

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

override

remove(Object? key)→ V?

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

override

removeWhere(bool test(K key, V value))→ void

Removes all entries of this map that satisfy the given test.

override

toString()→ String

A string representation of this object.

override

update(K key, V update(V value), {V ifAbsent()?})→ V

Updates the value for the provided key.

override

updateAll(V update(K key, V value))→ void

Updates all values.

override

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.

override

operator []=(K key, V value)→ void

Associates the key with the given value.

override