Chapter3 regions

src/Chapter03/Chapter03.csproj

@@ -13,7 +13,7 @@
   <Import Project="..\Chapter.props" />
   <ItemGroup>
     <Compile Remove="Listing03.02.DereferencingAnUnassignedVariable.cs" />
-    <Compile Remove="Listing03.03.EnablingNullableProjectWide-PlaceHolderFile.cs" />
+    <Compile Remove="Listing03.03.EnablingNullableProjectWide.cs" />
     <Compile Remove="Listing03.06.TheCSharpEquivalentOfCompilerGeneratedCILCodeForAValueTupleReturn.cs" />
   </ItemGroup>
   <ItemGroup>
@@ -25,8 +25,7 @@
     <None Include="Listing03.02.DereferencingAnUnassignedVariable.cs">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
-    <None Include="Listing03.03.EnablingNullableProjectWide-PlaceHolderFile.cs" />
-    <None Include="Listing03.03.EnablingNullableProjectWide.csproj" />
+    <None Include="Listing03.03.EnablingNullableProjectWide.cs" />
     <None Include="Listing03.06.TheCSharpEquivalentOfCompilerGeneratedCILCodeForAValueTupleReturn.cs" />
   </ItemGroup>
 </Project>

src/Chapter03/Listing03.01.CheckingForNull.cs

@@ -2,16 +2,16 @@ namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter03.Listing03_01
 {
     public class Program
     {
+        #region INCLUDE
         public static void Main(string[] args)
         {
             int? number = null;
-
-            // ...
-            if(args.Length>0)
+            #region EXCLUDE
+            if (args.Length>0)
             {
                 number = args[0].Length;
             }
-
+            #endregion
             if (number is null)
             {
                 System.Console.WriteLine(
@@ -22,8 +22,8 @@ public static void Main(string[] args)
                 System.Console.WriteLine(
                     $"'number' doubled is { number * 2 }.");
             }
-
         }
+        #endregion
     }
 }
 

src/Chapter03/Listing03.02.DereferencingAnUnassignedVariable.cs

@@ -2,13 +2,15 @@
 //{
     public class Program
     {
+        #region INCLUDE
+        #nullable enable
         public static void Main()
         {
             string? text;
             // ...
-
             // Compile Error: Use of unassigned local variable 'text'
             System.Console.WriteLine(text.Length);
         }
+        #endregion
     }
 //}

src/Chapter03/Listing03.03.EnablingNullableProjectWide.csproj.xml → src/Chapter03/Listing03.03.EnablingNullableProjectWide.cs

@@ -1,7 +1,9 @@
-<Project Sdk="Microsoft.NET.Sdk">
+#region INCLUDE
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 </Project>
+#endregion

src/Chapter03/Listing03.04.WorkingWithStrings.cs

@@ -1,5 +1,6 @@
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter03.Listing03_04
 {
+    #region INCLUDE
     public class Uppercase
     {
         public static void Main()
@@ -13,4 +14,5 @@ public static void Main()
             System.Console.WriteLine(uppercase);
         }
     }
+    #endregion
 }

src/Chapter03/Listing03.05.ImplicitLocalVariablesWithAnonymousTypes.cs

@@ -1,5 +1,6 @@
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter03.Listing03_05
 {
+    #region INCLUDE
     public class Program
     {
         public static void Main()
@@ -17,4 +18,5 @@ public static void Main()
                 $"{patent2.Title} ({patent2.YearOfPublication})");
         }
     }
+    #endregion
 }

src/Chapter03/Listing03.06.TheCSharpEquivalentOfCompilerGeneratedCILCodeForAValueTupleReturn.cs

@@ -1,13 +1,10 @@
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter03.Listing03_06
 {
-    namespace Chapter03
+    #region INCLUDE
+    [return: System.Runtime.CompilerServices.TupleElementNames(new string[] { "First", "Second" })]
+    public System.ValueTuple<string, string> ParseNames(string fullName)
     {
-        [return: System.Runtime.CompilerServices.TupleElementNames(new string[] { "First", "Second" })]
-        public System.ValueTuple<string, string> ParseNames(string fullName)
-        {
-            // ...
-        }
-
+        // ...
     }
-
+    #endregion
 }

src/Chapter03/Listing03.07.DeclaringAnArray.cs

@@ -5,7 +5,9 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             string[] languages;
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.08.DeclaringATwoDimensionalArray.cs

@@ -5,12 +5,14 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             //    |   | 
             // ---+---+--- 
             //    |   | 
             // ---+---+---
             //    |   | 
             int[,] cells;
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.09.ArrayDeclarationWithAssignment.cs

@@ -4,9 +4,11 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             string[] languages = { "C#", "COBOL", "Java",
                 "C++", "TypeScript", "Visual Basic",
                 "Python", "Lisp", "JavaScript" };
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.10.ArrayAssignmentFollowingDeclaration.cs

@@ -4,10 +4,12 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             string[] languages;
-            languages = new string[] { "C#", "COBOL", "Java",
+            languages = new string[]{ "C#", "COBOL", "Java",
                 "C++", "TypeScript", "Visual Basic",
                 "Python", "Lisp", "JavaScript" };
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.11.ArrayAssignmentWithNewDuringDeclaration.cs

@@ -4,10 +4,12 @@ public class Program
     { 
         public static void Main()
         {
-            string[] languages = new string[] {
+            #region INCLUDE
+            string[] languages = new string[]{
                 "C#", "COBOL", "Java",
                 "C++", "TypeScript", "Visual Basic",
                 "Python", "Lisp", "JavaScript" };
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.12.DeclarationAndAssignmentWithTheNewKeyword.cs

@@ -4,10 +4,12 @@ public class Program
     {
         public static void Main()
         {
-            string[] languages = new string[9] { 
+            #region INCLUDE
+            string[] languages = new string[9]{
                 "C#", "COBOL", "Java",
                 "C++", "TypeScript", "Visual Basic",
                 "Python", "Lisp", "JavaScript" };
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.13.AssigningWithoutLiteralValues.cs

@@ -4,7 +4,9 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             string[] languages = new string[9];
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.14.DefiningTheArraySizeAtRuntime.cs

@@ -4,11 +4,13 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             string[] groceryList;
             System.Console.Write("How many items on the list? ");
             int size = int.Parse(System.Console.ReadLine());
             groceryList = new string[size];
             // ...
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.15.DeclaringATwoDimensionalArray.cs

@@ -4,7 +4,9 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             int[,] cells = new int[3,3];
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.16.InitializingATwoDimensionalArrayOfIntegers.cs

@@ -4,11 +4,13 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             int[,] cells = {
                 {1, 0, 2},
                 {1, 2, 0},
                 {1, 2, 1}
             };
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.17.AMultidimensionalArrayWithInconsistentSizeCausingAnError.cs

@@ -4,15 +4,21 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             // ERROR: Each dimension must be consistently sized
+            #region EXCLUDE
             /*
+            #endregion
             int[,] cells = {
                 {1, 0, 2, 0},
                 {1, 2, 0},
                 {1, 2},
                 {1}
             };
+            #region EXCLUDE
             */
+            #endregion
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.18.InitializingAThreeDimensionalArray.cs

@@ -4,22 +4,34 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             bool[, ,] cells;
-            cells = new bool[2, 3, 3] 
+            cells = new bool[2, 3, 3]
             {
-                // Player 1 moves 
-                {                          //  X |   |
-                    {true, false, false},  // ---+---+---
-                    {true, false, false},  //  X |   | 
-                    {true, false, true}    // ---+---+---
-                },                         //  X |   | X 
-                // Player 2 moves 
-                {                          //    |   | O
-                    {false, false, true},  // ---+---+---
-                    {false, true, false},  //    | O | 
-                    {false, true, true}    // ---+---+---
-                }                          //    | O | 
+                // Player 1 moves
+                //  X |   |
+                // ---+---+---
+                //  X |   | 
+                // ---+---+---
+                //  X |   | X 
+                {
+                    {true, false, false},
+                    {true, false, false},
+                    {true, false, true}
+                },
+                // Player 2 moves
+                //    |   | O
+                // ---+---+---
+                //    | O | 
+                // ---+---+---
+                //    | O | 
+                {
+                    {false, false, true},
+                    {false, true, false},
+                    {false, true, true}
+                }
             };
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.19.InitializingAJaggedArray.cs

@@ -4,12 +4,14 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             int[][] cells = {
                 new int[] {1, 0, 2, 0},
                 new int[] {1, 2, 0},
                 new int[] {1, 2},
                 new int[] {1}
             };
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.20.DeclaringAndAccessingAnArray.cs

@@ -4,18 +4,20 @@ public class Program
     {
         public static void Main()
         {
-            string[] languages = new string[] {
+            #region INCLUDE
+            string[] languages = new string[9]{
                 "C#", "COBOL", "Java",
                 "C++", "TypeScript", "Visual Basic",
                 "Python", "Lisp", "JavaScript"};
                 // Retrieve fifth item in languages array (TypeScript)
                 string language = languages[4];
-                // Write �TypeScript�
+                // Write "TypeScript"
                 System.Console.WriteLine(language);
                 // Retrieve second item from the end (Python)
                 language = languages[^3];
-                // Write �Python�
+                // Write "Python"
                 System.Console.WriteLine(language);
+            #endregion
         }
     }
 }

src/Chapter03/Listing03.21.SwappingDataBetweenPositionsInAnArray.cs

@@ -4,6 +4,7 @@ public class Program
     {
         public static void Main()
         {
+            #region INCLUDE
             string[] languages = new string[] {
                 "C#", "COBOL", "Java",
                 "C++", "TypeScript", "Visual Basic",
@@ -14,6 +15,7 @@ public static void Main()
             languages[3] = languages[2];
             // Assign language to location of "Java"
             languages[2] = language;
+            #endregion
         }
     }
 }