// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002560/object-coalesce

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        object thisNull = null;

        object thisNotNull = "Fizz";

​

        // C# Extension Method: Object - Coalesce

        Console.WriteLine(thisNull.Coalesce(null, null, "Fizz", "Buzz")); // return "Fizz";

        Console.WriteLine(thisNull.Coalesce(null, "Fizz", null, "Buzz")); // return "Fizz";

        Console.WriteLine(thisNotNull.Coalesce(null, null, null, "Buzz")); // return "Fizz";

    }

}