fix: Implemented Misc Chapter 9 Changes from Mark

src/Chapter09/Listing09.03.ProgrammingWithARecordStruct.cs

@@ -9,8 +9,7 @@ public class Program
 {
     public static void Main()
     {
-        (int degrees, int minutes, int seconds) = (
-            90, 0, 0);
+        (int degrees, int minutes, int seconds) = (90, 0, 0);
 
         // The constructor is generated using positional parameters
         Angle angle = new(degrees, minutes, seconds);

src/Chapter09/Listing09.04.EquivalentRecordStructCode.cs

@@ -72,13 +72,9 @@ public bool Equals(Angle other) =>
         && EqualityComparer<int>.Default.Equals(Seconds, other.Seconds)
         && EqualityComparer<string>.Default.Equals(Name, other.Name);
 
-    public void Deconstruct(
-        out int Degrees, out int Minutes, out int Seconds, out string? Name)
-    {
-        Degrees = this.Degrees;
-        Minutes = this.Minutes;
-        Seconds = this.Seconds;
-        Name = this.Name;
-    }
+    public void Deconstruct(out int Degrees, out int Minutes,
+        out int Seconds, out string? Name)
+            => (Degrees, Minutes, Seconds, Name) =
+                (this.Degrees, this.Minutes, this.Seconds, this.Name);
 }
 #endregion INCLUDE

src/Chapter09/Listing09.06.EquivalentRecordClassCode.cs

@@ -1,6 +1,7 @@
 using AddisonWesley.Michaelis.EssentialCSharp.Chapter09.Listing09_02;
 
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter09.Listing09_06;
+
 #region INCLUDE
 using System.Runtime.CompilerServices;
 using System.Text;
@@ -12,8 +13,7 @@ public class Coordinate : IEquatable<Coordinate>
     public Angle Longitude { get; init; }
     public Angle Latitude { get; init; }
 
-    public Coordinate(Angle Longitude, Angle Latitude) :
-        base()
+    public Coordinate(Angle Longitude, Angle Latitude) : base()
     {
         this.Longitude = Longitude;
         this.Latitude = Latitude;
@@ -42,11 +42,14 @@ protected virtual bool PrintMembers(StringBuilder builder)
         return true;
     }
 
-    public static bool operator !=(Coordinate? left, Coordinate? right) => 
-        !(left == right);
+    public static bool operator !=(
+        Coordinate? left, Coordinate? right) =>
+            !(left == right);
 
-    public static bool operator ==(Coordinate? left, Coordinate? right) => 
-        ReferenceEquals(left, right) || (left?.Equals(right) ?? false);
+    public static bool operator ==(
+        Coordinate? left, Coordinate? right) =>
+            ReferenceEquals(left, right) ||
+                (left?.Equals(right) ?? false);
 
     public override int GetHashCode()
     {
@@ -70,7 +73,8 @@ public virtual bool Equals(Coordinate? other) =>
             && EqualityComparer<Angle>.Default.Equals(
                 Latitude, other!.Latitude));
 
-    public void Deconstruct(out Angle Longitude, out Angle Latitude)
+    public void Deconstruct(
+        out Angle Longitude, out Angle Latitude)
     {
         Longitude = this.Longitude;
         Latitude = this.Latitude;