using System;

using System.Linq;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("1:" + typeof(ValueTask).IsAssignableFrom(typeof(ValueTask<>)));

        Console.WriteLine("2:" + typeof(ValueTask).IsAssignableFrom(typeof(ValueTask<int>)));

        Console.WriteLine("3:" + typeof(ValueTask<>).IsAssignableFrom(typeof(ValueTask<>)));

        Console.WriteLine("4:" + typeof(ValueTask<int>).IsAssignableFrom(typeof(ValueTask<int>)));

        Console.WriteLine("5:" + typeof(ValueTask<>).IsAssignableFrom(typeof(ValueTask)));

        Console.WriteLine("6:" + typeof(ValueTask<int>).IsAssignableFrom(typeof(ValueTask)));

        Console.WriteLine("7:" + typeof(ValueTask<>).IsAssignableFrom(typeof(ValueTask<>)));

        Console.WriteLine("8:" + typeof(ValueTask<int>).IsAssignableFrom(typeof(ValueTask<int>)));

        Console.WriteLine("9:" + typeof(ValueTask<>).IsAssignableFrom(typeof(ValueTask<int>)));

        Console.WriteLine("10:" + typeof(ValueTask<int>).IsAssignableFrom(typeof(ValueTask<>)));

        Console.WriteLine("11:" + typeof(ValueTask<int>).IsGenericType);

        Console.WriteLine("12:" + typeof(ValueTask<int>).BaseType);

        Console.WriteLine("13:" + typeof(ValueTask<int>).Name);

        Console.WriteLine("14:" + ValueTaskMethod().Result);

        Console.WriteLine("15:" + ValueTaskAsyncMethod().Result);

    }

    public static ValueTask<int> ValueTaskMethod()

    {

        return new ValueTask<int>(10);

    }

    public static async ValueTask<int> ValueTaskAsyncMethod()

    {

        await Task.Delay(100).ConfigureAwait(false);

        return 10;

    }

}