[TPL] Wait for all tasks to finish ,but process result as each one completes ("WaitAllOneByOne" pattern ) .Use when some may fail and need to discard or retry

TplWaitAllOneByOne.cs

using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            var tasks = new List<Task<int>>();

            for (var i = 0; i < 10; i++)
            {
                //start 10 tasks
                tasks.Add(Task.Factory.StartNew(() => { return DoSomeLongCalculation(); }));
            }

            while (tasks.Count > 0) //wait  for all , one by one 
            {
                var index = Task.WaitAny(tasks.ToArray());
                //do something  with the result
                var result = tasks[index].Result;
                tasks.RemoveAt(index);
            }

            Console.ReadLine();
        }

        private static int DoSomeLongCalculation()
        {
            throw new NotImplementedException();
        }
    }
}