How to avoid loop by using LINQ for the following code?

Question

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

Answer 1

You are mutating the object at the end of the loop-variable, so you can't do that (cleanly) in pure LINQ. Just keep the loop; it'll be simpler to understand, but maybe it can be reduced a bit:

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

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