Question

I am working on a code base with a lot of ForEach... If's. I was planning to convert them to filtered for each’s but I wanted to know is the speed improvement worth the time. I know all of these things are relative but if the filtered for each is magnitudes faster in general it would make sense to change.

 For Each egg In chicken.Where(Function(x) x.Tasty = True)
      ' Do Stuff
 Next

 For Each egg In chicken
      If x.Tasty = True Then
           ' Do Stuff
      End If
 Next

Answer 1

One thing you could try is use the StopWatch class to measure how long each For loop takes e.g.

Dim sw As New Stopwatch()
sw.Start()

' Do some work..
sw.Stop()

Console.WriteLine("Elapsed time to do some work: {0}", sw.Elapsed.ToString())