如何通过LINQ使用以下代码来避免循环？

Question

foreach (Feature fe in features)
{
    if (fileNames.Any(file => file.Contains(fe.FeatureName)))
    {
        fe.MatchCount = fe.MatchCount == 0 ? 1 : fe.MatchCount;
    } 
}

Answer 1

你正在改变循环变量末尾的对象,所以你不能在纯 LINQ中这样做(干净利落).保持循环; 理解起来会更简单,但也许可以减少一点:

var qry = features.Where(fe => fe.MatchCount == 0 &&
           fileNames.Any(file => file.Contains(fe.FeatureName));

foreach (Feature fe in qry) { fe.MatchCount == 1; }