A Collection such as List, HashSet, Dictionary etc can be pooled and reused by using a CollectionPool.
Note the CollectionPool is not thread-safe. Additional resources: DictionaryPool<T0,T1>, HashSetPool<T0>, ListPool<T0>.
using System.Collections.Generic; using UnityEngine; using UnityEngine.Pool;
// This example shows how both version of Get could be used to simplify a line of points. public class Simplify2DLine { public List<Vector2> SimplifyLine(Vector2[] points) { // This version will only be returned to the pool if we call Release on it. var simplifiedPoints = CollectionPool<List<Vector2>, Vector2>.Get();
// Copy the points into a temp list so we can pass them into the Simplify method // When the pooled object leaves the scope it will be Disposed and returned to the pool automatically. // This version is ideal for working with temporary lists. using (CollectionPool<List<Vector2>, Vector2>.Get(out List<Vector2> tempList)) { for (int i = 0; i < points.Length; ++i) { tempList.Add(points[i]); }
LineUtility.Simplify(tempList, 1.5f, simplifiedPoints); } return simplifiedPoints; } }