Weak Referenced Collection Classes

WeakHashMap, WeakHashSet, WeakList, and WeakReferenceQueue implemented with WeakReference and Finalizer

Features

• WeakHashMap: A hash-table based implementation of Map with weak referenced keys. An entry in this weak hash map will be automatically removed when its key is garbage collected.

• WeakHashSet: A hash-table based implementation of Set with weak referenced elements. An element in this weak hash set will be automatically removed when the element is garbage collected.

• WeakList: An ordered List implementation with weak referenced elements. An element in this weak list will be automatically nullified when the element is garbage collected.

• WeakReferenceQueue: A queue that maintains payload of its associated weak referenced target. The payload registered in this class will be appended into the queue when its associated target is garbage collected. Then you can call WeakReferenceQueue.poll method to retrieve back the payloads from the queue and do some after-garbage-collected process.

Getting started

Add this weak package to your pubspec.yaml dependencies

Usage

import 'package:weak/weak.dart';

// ...
        
final weakMap = WeakHashMap();
final weakSet = WeakHashSet();
final weakList = WeakList();
final weakReferenceQueue = WeakReferenceQueue();

// ...