c#不能作为ref传递
本文关键字:ref 传递 不能 | 更新日期: 2023-09-27 18:05:57
当我遇到这个错误时,我正在尝试在c#中使用EMGUCV编程:
错误1不能传递'currentFrameBlob'作为ref/out参数,因为它是一个'foreach迭代变量'
错误2不能传递'currentFrameBlob'作为ref/out参数,因为它是一个'foreach迭代变量'
它位于这个代码块中。
public void matchCurrentFrameBlobsToExistingBlobs(ref List<Blob> existingBlobs, ref List<Blob> currentFrameBlobs)
{
foreach (Blob existingBlob in existingBlobs)
{
existingBlob.blnCurrentMatchFoundOrNewBlob = false;
existingBlob.predictNextPosition();
}
foreach (Blob currentFrameBlob in currentFrameBlobs)
{
int intIndexOfLeastDistance = 0;
double dblLeastDistance = 1000000.0;
for (int i = 0; i <= existingBlobs.Count() - 1; i++)
{
if ((existingBlobs[i].blnStillBeingTracked == true))
{
double dblDistance = distanceBetweenPoints(currentFrameBlob.centerPositions.Last(), existingBlobs[i].predictedNextPosition);
if ((dblDistance < dblLeastDistance))
{
dblLeastDistance = dblDistance;
intIndexOfLeastDistance = i;
}
}
}
if ((dblLeastDistance < currentFrameBlob.dblCurrentDiagonalSize * 0.5))
{
addBlobToExistingBlobs(ref currentFrameBlob, ref existingBlobs, ref intIndexOfLeastDistance);
}
else
{
addNewBlob(ref currentFrameBlob, ref existingBlobs);
}
}
我读到这个错误,在我看来,这是c#的一个怪癖。处理这类错误最有效的方法是什么?现在我很害怕做出改变,因为我不知道如何在不让事情变得更糟的情况下解决它。
最简单的修改:
foreach (Blob currentFrameBlob2 in currentFrameBlobs)
{
Blob currentFrameBlob = currentFrameBlob2;
//....