Refactor records to classes and update syntax

Changed `Championship`, `Racer`, and `Team` from records to classes, affecting instance management and initialization. Updated constructors for `Racer` and `Team` to improve handling of parameters. Modified array initialization syntax in `FilterSamples.cs` and `Program.cs` to use modern C# features. Enhanced random number generation in `Program.cs` for better performance.

Author: christiannagel

1_CS/LINQ/DataLib/Championship.cs

@@ -1,3 +1,3 @@
 namespace DataLib;
 
-public record Championship(int Year, string First, string Second, string Third);
+public record class Championship(int Year, string First, string Second, string Third);

1_CS/LINQ/DataLib/Formula1.cs

@@ -139,8 +139,8 @@ public static IEnumerable<Championship> GetChampionships() => s_championships ??
         new(2020, "Lewis Hamilton", "Valtteri Bottas", "Max Verstappen"),
         new(2021, "Max Verstappen", "Lewis Hamilton", "Valtteri Bottas"),
         new(2022, "Max Verstappen", "Charles Leclerc","Sergio Perez"),
-        new Championship(2023, "Max Verstappen", "Sergio Perez", "Lewis Hamilton"),
-        new Championship(2024, "Max Verstappen", "Lando Norris", "Charles Leclerc")
+        new(2023, "Max Verstappen", "Sergio Perez", "Lewis Hamilton"),
+        new(2024, "Max Verstappen", "Lando Norris", "Charles Leclerc")
     ];
 
     private static List<Racer>? s_moreRacers;

1_CS/LINQ/DataLib/Racer.cs

@@ -1,6 +1,6 @@
 namespace DataLib;
 
-public record Racer(string FirstName, string LastName, string Country, int Starts, int Wins, IEnumerable<int> Years, IEnumerable<string> Cars) : IComparable<Racer>, IFormattable
+public record class Racer(string FirstName, string LastName, string Country, int Starts, int Wins, IEnumerable<int> Years, IEnumerable<string> Cars) : IComparable<Racer>, IFormattable
 {
     public Racer(string FirstName, string LastName, string Country, int Starts, int Wins)
         : this(FirstName, LastName, Country, Starts, Wins, [], [])

1_CS/LINQ/DataLib/Team.cs

@@ -1,6 +1,6 @@
 namespace DataLib;
 
-public record Team
+public record class Team
 {
     public Team(string name, params int[] years)
     {

1_CS/LINQ/EnumerableSample/FilterSamples.cs

@@ -46,7 +46,7 @@ public static void TypeFilter()
     {
         Console.WriteLine("query with a type filter - OfType - only getting strings");
 
-        object[] data = { "one", 2, 3, "four", "five", 6 };
+        object[] data = ["one", 2, 3, "four", "five", 6];
         var query = data.OfType<string>();
 
         foreach (var s in query)

1_CS/LINQ/ParallelLinqSample/Program.cs

@@ -88,7 +88,6 @@ where Math.Log(x) < 4
     static IList<int> SampleData()
     {
         const int arraySize = 50_000_000;
-        var r = new Random();
-        return Enumerable.Range(0, arraySize).Select(x => r.Next(140)).ToList();
+        return [.. Enumerable.Range(0, arraySize).Select(x => Random.Shared.Next(140))];
     }
 }