Initial commit

vs4win/Chapter08/WorkingWithRegularExpressions/Program.Regexs.cs

@@ -0,0 +1,10 @@
+using System.Text.RegularExpressions; // [GeneratedRegex]
+
+partial class Program
+{
+  [GeneratedRegex(digitsOnlyText)]
+  private static partial Regex DigitsOnly();
+
+  [GeneratedRegex(commaSeparatorText)]
+  private static partial Regex CommaSeparator();
+}

vs4win/Chapter08/WorkingWithRegularExpressions/Program.Strings.cs

@@ -0,0 +1,14 @@
+using System.Diagnostics.CodeAnalysis; // [StringSyntax]
+
+partial class Program
+{
+  [StringSyntax(StringSyntaxAttribute.DateTimeFormat)]
+  const string fullDateTime = "dddd, d MMMM yyyy";
+
+  [StringSyntax(StringSyntaxAttribute.Regex)]
+  const string digitsOnlyText = @"^\d+$";
+
+  [StringSyntax(StringSyntaxAttribute.Regex)]
+  const string commaSeparatorText = 
+    "(?:^|,)(?=[^\"]|(\")?)\"?((?(1)[^\"]*|[^,\"]*))\"?(?=,|$)";
+}

vs4win/Chapter08/WorkingWithRegularExpressions/Program.cs

@@ -3,7 +3,7 @@
 Write("Enter your age: ");
 string input = ReadLine()!; // null-forgiving
 
-Regex ageChecker = new(@"^\d+$");
+Regex ageChecker = DigitsOnly();
 
 if (ageChecker.IsMatch(input))
 {
@@ -32,8 +32,7 @@ foreach (string film in filmsDumb)
   WriteLine(film);
 }
 
-Regex csv = new(
+Regex csv = CommaSeparator();
-  "(?:^|,)(?=[^\"]|(\")?)\"?((?(1)[^\"]*|[^,\"]*))\"?(?=,|$)");
 
 MatchCollection filmsSmart = csv.Matches(films);
 

vscode/Chapter08/WorkingWithRegularExpressions/Program.Regexs.cs

@@ -0,0 +1,10 @@
+using System.Text.RegularExpressions; // [GeneratedRegex]
+
+partial class Program
+{
+  [GeneratedRegex(digitsOnlyText)]
+  private static partial Regex DigitsOnly();
+
+  [GeneratedRegex(commaSeparatorText)]
+  private static partial Regex CommaSeparator();
+}

vscode/Chapter08/WorkingWithRegularExpressions/Program.Strings.cs

@@ -0,0 +1,14 @@
+using System.Diagnostics.CodeAnalysis; // [StringSyntax]
+
+partial class Program
+{
+  [StringSyntax(StringSyntaxAttribute.DateTimeFormat)]
+  const string fullDateTime = "dddd, d MMMM yyyy";
+
+  [StringSyntax(StringSyntaxAttribute.Regex)]
+  const string digitsOnlyText = @"^\d+$";
+
+  [StringSyntax(StringSyntaxAttribute.Regex)]
+  const string commaSeparatorText = 
+    "(?:^|,)(?=[^\"]|(\")?)\"?((?(1)[^\"]*|[^,\"]*))\"?(?=,|$)";
+}

vscode/Chapter08/WorkingWithRegularExpressions/Program.cs

@@ -3,7 +3,7 @@
 Write("Enter your age: ");
 string input = ReadLine()!; // null-forgiving
 
-Regex ageChecker = new(@"^\d+$");
+Regex ageChecker = DigitsOnly();
 
 if (ageChecker.IsMatch(input))
 {
@@ -32,8 +32,7 @@ foreach (string film in filmsDumb)
   WriteLine(film);
 }
 
-Regex csv = new(
+Regex csv = CommaSeparator();
-  "(?:^|,)(?=[^\"]|(\")?)\"?((?(1)[^\"]*|[^,\"]*))\"?(?=,|$)");
 
 MatchCollection filmsSmart = csv.Matches(films);