static void Sync(int n)
{
Console.WriteLine("IEnumerable<T> and IFastEnumerable<T>");
Console.WriteLine();
var sw = new Stopwatch();
var N = 10_000_000;
var next = new Action <int>(_ => { });
var slowRange = Enumerable.Range(0, N);
var fastRange = FastEnumerable.Range(0, N);
var brdgRange = slowRange.ToFastEnumerable();
var slow = slowRange.Where(x => x % 2 == 0).Select(x => x + 1);
var fast = fastRange.Where(x => x % 2 == 0).Select(x => x + 1);
var brdg = brdgRange.Where(x => x % 2 == 0).Select(x => x + 1).ToEnumerable();
Console.WriteLine("slow.Sum() = " + slow.Aggregate(0, (sum, x) => sum + x));
Console.WriteLine("fast.Sum() = " + fast.Aggregate(0, (sum, x) => sum + x));
Console.WriteLine("brdg.Sum() = " + brdg.Aggregate(0, (sum, x) => sum + x));
Console.WriteLine();
for (var i = 0; i < n; i++)
{
sw.Restart();
{
slow.ForEach(next);
}
Console.WriteLine("SLOW " + sw.Elapsed);
sw.Restart();
{
fast.ForEach(next);
}
Console.WriteLine("FAST " + sw.Elapsed);
sw.Restart();
{
brdg.ForEach(next);
}
Console.WriteLine("BRDG " + sw.Elapsed);
Console.WriteLine();
}
Console.WriteLine();
}
