static void Main(string[] args)
{
var sum = 0.0;
using (PerfLogger.Measure("100M for iterations"))
for (var i = 0; i < 100000000; i++)
{
sum += i;
}
using (PerfLogger.Measure("100M LINQ iterations"))
sum -= Enumerable.Range(0, 100000000).Sum(i => (double)i);
Console.WriteLine(sum);
}