// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002477/object-tocharordefault

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        object val1 = 'a';

        object val2 = '-';

        object thisInvalid = "FizzBuzz";

        string format = "{0, -20} {1, -15}";

        Console.WriteLine(format, "Object", "ToCharOrDefault");

        Console.WriteLine(format, "------", "---------------");

        // C# Extension Method: Object - ToCharOrDefault

        Console.WriteLine(format, val1, val1.ToCharOrDefault());

        Console.WriteLine(format, val2, val2.ToCharOrDefault());

        Console.WriteLine(format, thisInvalid, thisInvalid.ToCharOrDefault());

        Console.WriteLine(format, thisInvalid, thisInvalid.ToCharOrDefault('.'));

        Console.WriteLine(format, thisInvalid, thisInvalid.ToCharOrDefault(() => '.'));

    }

}