using System.Diagnostics;
using System.Threading.Tasks;
public static void Main()
private static async Task Test() { await Measure("ForEach", CodeWithForEach(CreateTasks(3))); await Measure("WhenAll", CodeWithWhenAll(CreateTasks(3))); private static async Task Measure(string testName, Task task) { var stopWatch = new Stopwatch();
Console.WriteLine($"{testName} took {stopWatch.Elapsed}."); private static Task[] CreateTasks(int n) { Console.WriteLine($"Creating {n} tasks with durations from 1s to {n}s:"); return Enumerable.Range(1, n).Select(i => Task.Delay(i * 1000)).ToArray();
private static async Task CodeWithWhenAll(Task[] tasks) { await Task.WhenAll(tasks);
private static async Task CodeWithForEach(Task[] tasks) { foreach(var task in tasks) {
