MapBase<K, V> class

Base class for implementing a Map.

Base class for implementing a Map.

This class has a basic implementation of all but five of the members of Map. A basic Map class can be implemented by extending this class and implementing keys, operator[], operator[]=, remove and clear. The remaining operations are implemented in terms of these five.

The keys iterable should have efficient length and contains operations, and it should catch concurrent modifications of the keys while iterating.

A more efficient implementation is usually possible by overriding some of the other members as well.

Mixes-in:
Implementors

Constructors

MapBase ( )
const

Instance Properties

length int Inherited
read-only
isEmpty bool Inherited
read-only
isNotEmpty bool Inherited
read-only
values Iterable<V> Inherited
read-only
keys Iterable<K> Inherited
read-only
values Iterable<V> Inherited
read-only

Instance Methods

toString Inherited ( ) → String
Returns a string representation of this object.
forEach Inherited ( void action(K key, V value) ) → void
Applies [f] to each key-value pair of the map.
addAll Inherited ( Map<K,V> other ) → void
Adds all key-value pairs of [other] to this map.
containsValue Inherited ( V value ) → bool
Returns true if this map contains the given [value].
putIfAbsent Inherited ( K key, V ifAbsent() ) → V
Look up the value of [key], or add a new value if it isn't there.
containsKey Inherited ( Object key ) → bool
Returns true if this map contains the given [key].
containsValue Inherited ( V value ) → bool
Returns true if this map contains the given [value].
remove Inherited ( Object key ) → V
Removes [key] and its associated value, if present, from the map.
clear Inherited ( ) → void
Removes all pairs from the map.
addAll Inherited ( Map<K,V> other ) → void
Adds all key-value pairs of [other] to this map.
forEach Inherited ( void action(K key, V value) ) → void
Applies [f] to each key-value pair of the map.
putIfAbsent Inherited ( K key, V ifAbsent() ) → V
Look up the value of [key], or add a new value if it isn't there.

Operators

operator []= Inherited ( K key, V value ) → dynamic
Associates the [key] with the given [value].
operator [] Inherited ( Object key ) → V
Returns the value for the given [key] or null if [key] is not in the map.