using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("null");

        Test(null);

        Console.WriteLine();

        Console.WriteLine("new int[0]");

        Test(new int[0]);

        Console.WriteLine();

        Console.WriteLine("new int[] { 1, 2 }");

        Test(new int[] { 1, 2 });

    }

    private static void Test(int[] array)

    {

        Console.WriteLine("array == null || array.Length == 0 => " + (array == null || array.Length == 0));

        Console.WriteLine("array?.Any() == false => " + (array?.Any() == false));

    }

}