using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        List<string> l = new();

        Console.WriteLine($"When it's empty: {myfunc(l)}");

        l.Add("Example");       

        Console.WriteLine($"When it's a match: {myfunc(l)}");

​

        l.Add("Example2");      

        Console.WriteLine($"When there are two: {myfunc(l)}");

​

        l = null;       

        Console.WriteLine($"When it's null: {myfunc(l)}");

        bool myfunc(List<string> listOfStrings)

        {

            return listOfStrings?.Count() == 1 && listOfStrings.First() == "Example";

        }

    }

}