相关疑难解决方法(0)

我正在做一些关于收益率回归性能的测试,我发现它比正常回报慢.

我测试了值变量(int,double等)和一些引用类型(字符串等)......并且两种情况下的yield return都较慢.为什么要用呢？

看看我的例子:

public class YieldReturnTeste
{
    private static IEnumerable<string> YieldReturnTest(int limite)
    {
        for (int i = 0; i < limite; i++)
        {
            yield return i.ToString();
        }
    }

    private static IEnumerable<string> NormalReturnTest(int limite)
    {
        List<string> listaInteiros = new List<string>();

        for (int i = 0; i < limite; i++)
        {
            listaInteiros.Add(i.ToString());
        }
        return listaInteiros;
    }

    public static void executaTeste()
    {
        Stopwatch stopWatch = new Stopwatch();

        stopWatch.Start();

        List<string> minhaListaYield = YieldReturnTest(2000000).ToList();

        stopWatch.Stop();

        TimeSpan ts = stopWatch.Elapsed;


        string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}",

        ts.Hours, …