// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002527/object-tonullableshortordefault

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        object val1 = 123;

        object val2 = "1090";

        object thisInvalid = "A100";

        object thisNull = null;

        string format = "{0, -30} {1, -15}";

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

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

        // C# Extension Method: Object - ToNullableShortOrDefault

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

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

        Console.WriteLine(format, "null", thisNull.ToNullableShortOrDefault());

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

        Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableShortOrDefault(-1));

        Console.WriteLine(format, thisInvalid, thisInvalid.ToNullableShortOrDefault(() => -2));

    }

}