Update strategy pattern examples

Author: nemanjarogic

src/BehavioralPatterns/Strategy/StrategyLibrary/Executor.cs

@@ -13,4 +13,4 @@ public override void Execute()
         ShippingExecutor.Execute();
         SortingExecutor.Execute();
     }
-}
+}

src/BehavioralPatterns/Strategy/StrategyLibrary/ShippingExample/Address.cs

@@ -2,17 +2,11 @@
 
 public class Address
 {
-    public string ContactName { get; set; }
-
-    public string AddressLine1 { get; set; }
-
-    public string AddressLine2 { get; set; }
-
-    public string City { get; set; }
-
-    public string Region { get; set; }
-
-    public string Country { get; set; }
-
-    public string PostalCode { get; set; }
-}
+    public string ContactName { get; set; } = string.Empty;
+    public string AddressLine1 { get; set; } = string.Empty;
+    public string AddressLine2 { get; set; } = string.Empty;
+    public string City { get; set; } = string.Empty;
+    public string Region { get; set; } = string.Empty;
+    public string Country { get; set; } = string.Empty;
+    public string PostalCode { get; set; } = string.Empty;
+}

src/BehavioralPatterns/Strategy/StrategyLibrary/ShippingExample/Order.cs

@@ -2,9 +2,14 @@
 
 public class Order
 {
-    public string Description { get; set; }
+    public Order(string description, Address origin, Address destination)
+    {
+        Description = description;
+        Origin = origin;
+        Destination = destination;
+    }
 
-    public Address Origin { get; set; }
-
-    public Address Destination { get; set; }
-}
+    public string Description { get; }
+    public Address Origin { get; }
+    public Address Destination { get; }
+}

src/BehavioralPatterns/Strategy/StrategyLibrary/ShippingExample/ShippingCostCalculationService.cs

@@ -11,8 +11,6 @@ public ShippingCostCalculationService(IShippingProvider shippingCostStrategy)
         _shippingProvider = shippingCostStrategy;
     }
 
-    public decimal Calculate(Order order)
-    {
-        return _shippingProvider.CalculateCost(order);
-    }
-}
+    public decimal Calculate(Order order) =>
+        _shippingProvider.CalculateCost(order);
+}

src/BehavioralPatterns/Strategy/StrategyLibrary/ShippingExample/ShippingExecutor.cs

@@ -32,18 +32,12 @@ public static void Execute()
             PostalCode = "02367",
         };
 
-        var order = new Order
-        {
-            Origin = originAddress,
-            Destination = destinationAddress,
-            Description = "Xiaomi Mi 10T Pro",
-        };
-
+        var order = new Order("Xiaomi Mi 10T Pro", originAddress, destinationAddress);
         IShippingProvider fedEx = new FedEx();
         var shippingCostCalculationService = new ShippingCostCalculationService(fedEx);
 
         var price = shippingCostCalculationService.Calculate(order);
 
         Console.WriteLine($"Shipping price for {order.Description} is {price:C}");
     }
-}
+}

src/BehavioralPatterns/Strategy/StrategyLibrary/ShippingExample/ShippingProviders/Common/IShippingProvider.cs

@@ -3,4 +3,4 @@
 public interface IShippingProvider
 {
     decimal CalculateCost(Order order);
-}
+}

src/BehavioralPatterns/Strategy/StrategyLibrary/ShippingExample/ShippingProviders/FedEx.cs

@@ -4,8 +4,5 @@ namespace StrategyLibrary.ShippingExample.ShippingProviders;
 
 public class FedEx : IShippingProvider
 {
-    public decimal CalculateCost(Order order)
-    {
-        return 10;
-    }
-}
+    public decimal CalculateCost(Order order) => 10;
+}

src/BehavioralPatterns/Strategy/StrategyLibrary/ShippingExample/ShippingProviders/RoyalMail.cs

@@ -4,8 +4,5 @@ namespace StrategyLibrary.ShippingExample.ShippingProviders;
 
 public class RoyalMail : IShippingProvider
 {
-    public decimal CalculateCost(Order order)
-    {
-        return 8.5m;
-    }
-}
+    public decimal CalculateCost(Order order) => 8.5m;
+}

src/BehavioralPatterns/Strategy/StrategyLibrary/ShippingExample/ShippingProviders/UnitedParcelService.cs

@@ -4,8 +4,5 @@ namespace StrategyLibrary.ShippingExample.ShippingProviders;
 
 public class UnitedParcelService : IShippingProvider
 {
-    public decimal CalculateCost(Order order)
-    {
-        return 9;
-    }
-}
+    public decimal CalculateCost(Order order) => 9;
+}

src/BehavioralPatterns/Strategy/StrategyLibrary/SortingExample/Person.cs

@@ -10,13 +10,8 @@ public Person(string firstName, string lastName, int yearOfBirth)
     }
 
     public string FirstName { get; set; }
-
     public string LastName { get; set; }
-
     public int YearOfBirth { get; set; }
 
-    public override string ToString()
-    {
-        return $"{FirstName} {LastName} - {YearOfBirth}";
-    }
-}
+    public override string ToString() => $"{FirstName} {LastName} - {YearOfBirth}";
+}