From ee316fde8ab573b046c77e8f44a124bc297eef4e Mon Sep 17 00:00:00 2001
From: Mark J Price <markjprice@gmail.com>
Date: Thu, 10 Nov 2022 22:05:48 +0000
Subject: [PATCH] Added item for page 244

---
 .../Chapter05/PacktLibraryModern/Records.cs   | 18 +++++++++++
 .../PacktLibraryNetStandard2/Records.cs       |  7 -----
 vscode/Chapter05/PeopleApp/Program.cs         | 31 +++++++++++++++----
 3 files changed, 43 insertions(+), 13 deletions(-)
 create mode 100644 vscode/Chapter05/PacktLibraryModern/Records.cs
 delete mode 100644 vscode/Chapter05/PacktLibraryNetStandard2/Records.cs

diff --git a/vscode/Chapter05/PacktLibraryModern/Records.cs b/vscode/Chapter05/PacktLibraryModern/Records.cs
new file mode 100644
index 0000000..096d29d
--- /dev/null
+++ b/vscode/Chapter05/PacktLibraryModern/Records.cs
@@ -0,0 +1,18 @@
+namespace Packt.Shared;
+
+public class ImmutablePerson
+{
+  public string? FirstName { get; init; }
+  public string? LastName { get; init; }
+}
+
+public record ImmutableVehicle
+{
+  public int Wheels { get; init; }
+  public string? Color { get; init; }
+  public string? Brand { get; init; }
+}
+
+// simpler way to define a record
+// auto-generates the properties, constructor, and deconstructor
+public record ImmutableAnimal(string Name, string Species);
\ No newline at end of file
diff --git a/vscode/Chapter05/PacktLibraryNetStandard2/Records.cs b/vscode/Chapter05/PacktLibraryNetStandard2/Records.cs
deleted file mode 100644
index bfb2a46..0000000
--- a/vscode/Chapter05/PacktLibraryNetStandard2/Records.cs
+++ /dev/null
@@ -1,7 +0,0 @@
-namespace Packt.Shared;
-
-public class ImmutablePerson
-{
-  //public string? FirstName { get; init; }
-  //public string? LastName { get; init; }
-}
diff --git a/vscode/Chapter05/PeopleApp/Program.cs b/vscode/Chapter05/PeopleApp/Program.cs
index f80431d..f57c114 100644
--- a/vscode/Chapter05/PeopleApp/Program.cs
+++ b/vscode/Chapter05/PeopleApp/Program.cs
@@ -293,9 +293,28 @@ foreach (Passenger passenger in passengers)
   WriteLine($"Flight costs {flightCost:C} for {passenger}");
 }
 
-//ImmutablePerson jeff = new()
-//{
-//  FirstName = "Jeff",
-//  LastName = "Winger"
-//};
-//jeff.FirstName = "Geoff";
+ImmutablePerson jeff = new()
+{
+  FirstName = "Jeff",
+  LastName = "Winger"
+};
+// We cannot set the properties after initialization because they
+// are init-only.
+// jeff.FirstName = "Geoff";
+
+ImmutableVehicle car = new()
+{
+  Brand = "Mazda MX-5 RF",
+  Color = "Soul Red Crystal Metallic",
+  Wheels = 4
+};
+
+ImmutableVehicle repaintedCar = car
+  with { Color = "Polymetal Grey Metallic" };
+
+WriteLine($"Original car color was {car.Color}.");
+WriteLine($"New car color is {repaintedCar.Color}.");
+
+ImmutableAnimal oscar = new("Oscar", "Labrador");
+var (who, what) = oscar; // calls Deconstruct method 
+WriteLine($"{who} is a {what}.");