IAsyncEnumerable compare

program.cs

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

namespace PhotoSlash
{
    class Program
    {
        static async Task Main(string[] args)
        {
            Console.WriteLine("Hello World!");


            await foreach (var number in GenerateNumbers())
            {
                Console.WriteLine(number);
            }

            foreach (var number in await GenerateNumbers2())
            {
                Console.WriteLine(number);
            }
        }

        internal static async IAsyncEnumerable<int> GenerateNumbers()
        {
            var x = 5;

            for (int i = 0; i < 50; i++)
            {
                if (i % 10 == 0)
                {
                    await Task.Delay(3000);
                    
                }

                yield return 5;
            }
        }

        internal static async Task<IEnumerable<int>> GenerateNumbers2()
        {
            var numbers = new List<int>();

            for (int i = 0; i < 50; i++)
            {
                if (i % 10 == 0)
                {
                    await Task.Delay(3000);
                }

                numbers.Add(i);

            }

            return numbers;
        }

       
    }
}