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在Unity中进行速度和GC Alloc的测试
测试脚本: using UnityEngine; using System; using System.Collections; using System.Diagnostics; public class NullableTest : MonoBehaviour { void Start() { Stopwatch stopwatch = new Stopwatch(); stopwatch.Start(); for (int i = 0; i < 1000000; i++) { int a = i; //int? a = i; a.GetHashCode(); } stopwatch.Stop(); UnityEngine.Debug.Log("time(ms): " + stopwatch.ElapsedMilliseconds); } }
100万次循环下,可空类型执行速度45ms,非可空类型执行速度12ms
并且没有GC。 |
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