using System;

public class Program

{

    public static void Main()

    {

        Person person1 = new Person("Ryan", "Fiorini");

        Person person2 = new Person("Ryan", "Fiorini");

        Person person3 = new Person("Ryan", "Fiorini1");

        Person person4 = person3;

        Person2 person5 = new Person2("Ryan", "Fiorini");

        Console.WriteLine($"person1 and person2 equal: {person1 == person2}");

        Console.WriteLine($"person2 and person3 equal: {person2 == person3}");

        Console.WriteLine($"person3 and person4 equal: {person3 == person4}");

​

        PrintObjectCategory("person1", person1.GetType());

        PrintObjectCategory("person2", person2.GetType());

        PrintObjectCategory("person3", person3.GetType());

        PrintObjectCategory("person4", person4.GetType());

        PrintObjectCategory("person5", person5.GetType());

​

        // error: can't == compare with two different record types

        //Console.WriteLine($"person1 and person5 equal: {person1 == person5}");

        // ----------------------------------------------------------------

        Person4 person10 = new Person4() { FirstName = "Ryan", LastName = "Fiorini" };

        Person4 person11 = new Person4() { FirstName = "Ryan", LastName = "Fiorini" };

        Person4 person12 = person11 with { FirstName = "Ryan", LastName = "Fiorini" };

        Person4 person13 = person11 with { FirstName = "Ryan1", LastName = "Fiorini1" };

        Person4 person14 = person13 with { };  // every property was copied

        Console.WriteLine($"person10 and person11 equal: {person10 == person11}");

        Console.WriteLine($"person11 and person12 equal: {person11 == person12}");

        Console.WriteLine($"person11 and person13 equal: {person11 == person13}");

        Console.WriteLine($"person13 and person14 equal: {person13 == person14}");

​

        PrintObjectCategory("person10", person10.GetType());

        PrintObjectCategory("person11", person11.GetType());

        PrintObjectCategory("person12", person13.GetType());

        PrintObjectCategory("person13", person13.GetType());

        PrintObjectCategory("person14", person14.GetType());

    }

    private static void PrintObjectCategory(string name, Type spaceObject)

    {

        //Console.ForegroundColor = ConsoleColor.White;

        var objectTypeDescription = spaceObject

                .IsValueType

                ? "Value"

                : "Reference";

​

        Console.WriteLine($"{name} is a {objectTypeDescription} type");

    }

}

​

// positional record (Immutable)

public record Person(string FirstName, string LastName);

​

// positional record (Immutable)

public record Person2(string FirstName, string LastName);

​

// record (Immutable by init only setters)

public record Person4() {

    public string FirstName {get; init;}    

    public string LastName {get; init;} 

}