fix money type

csharp-fp1/Domain/Money.cs

@@ -1,32 +1,7 @@
 namespace CsharpFp1.Domain;
 
-/// Value object used to represent money and enforce simple invariants.
+public sealed record Money(decimal Amount)
-/// Note that this implementation uses immutable patterns for the data
-/// by returning a new instance for each modification. This is an early
-/// recommendation for DDD with OO, but not necessarily the common practice
-/// in many real-world implementations.
-public sealed class Money
 {
-    // Potentially with a setter - see note above
-    public decimal Amount { get; }
-
-    public Money(decimal amount)
-    {
-        Amount = amount;
-    }
-
-    // In many existing DDD/OO codebases you may actually see the use
-    // of mutable value types.
-    //
-    // public void Add(Money other)
-    // {
-    //     this.Amount += other.Amount;
-    // }
-
-    // On the other hand, sometimes these helpers may be left out
-    // and operations encoded directly "from the outside":
-    // newBalance = new Money(oldBalance.Amount - charge.Amount)
-    //
     public Money Add(Money other) => new(Amount + other.Amount);
 
     public Money Subtract(Money other) => new(Amount - other.Amount);

csharp-oop-simplified2/Domain/Money.cs

@@ -1,32 +1,7 @@
-namespace CsharpFp1.Domain;
+namespace CsharpOopSimplified2.Domain;
 
-/// Value object used to represent money and enforce simple invariants.
+public sealed record Money(decimal Amount)
-/// Note that this implementation uses immutable patterns for the data
-/// by returning a new instance for each modification. This is an early
-/// recommendation for DDD with OO, but not necessarily the common practice
-/// in many real-world implementations.
-public sealed class Money
 {
-    // Potentially with a setter - see note above
-    public decimal Amount { get; }
-
-    public Money(decimal amount)
-    {
-        Amount = amount;
-    }
-
-    // In many existing DDD/OO codebases you may actually see the use
-    // of mutable value types.
-    //
-    // public void Add(Money other)
-    // {
-    //     this.Amount += other.Amount;
-    // }
-
-    // On the other hand, sometimes these helpers may be left out
-    // and operations encoded directly "from the outside":
-    // newBalance = new Money(oldBalance.Amount - charge.Amount)
-    //
     public Money Add(Money other) => new(Amount + other.Amount);
 
     public Money Subtract(Money other) => new(Amount - other.Amount);