Updates

examples/dart_example/bin/dart_example.dart

@@ -81,6 +81,7 @@ class OperationLogger {
     String message,
   ) {
     print(
-        '$scope: ${T.runtimeType.toString()} [ ${operation.operationId}...$message ');
+      '$scope: ${T.runtimeType.toString()} [ ${operation.operationId}...$message ',
+    );
   }
 }

packages/extensions/example/example_dependency_injection.dart

@@ -0,0 +1,17 @@
+import 'dart:collection';
+
+import 'package:extensions/dependency_injection.dart';
+
+void main() {
+  var collection = ServiceCollection();
+  collection.addSingleton<String>((services) => '1');
+  collection.addSingleton<String>((services) => '2');
+  collection.addSingleton<int>((services) => 3);
+  collection.addSingleton<int>((services) => 4);
+  collection.addSingleton<int>((services) => 5);
+  var sp = collection.buildServiceProvider();
+
+  var result = sp.getService<int>();
+
+  print(result);
+}

packages/extensions/example/example_hosting.dart

@@ -1,9 +1,9 @@
 import 'package:extensions/hosting.dart';
 
 void main() {
-  var builder = Host.createApplicationBuilder()
-    ..logging.addDebug()
-    ..logging.setMinimumLevel(LogLevel.trace);
+  var builder = Host.createApplicationBuilder();
+  // ..logging.addDebug()
+  // ..logging.setMinimumLevel(LogLevel.trace);
 
   var host = builder.build()..start();
 

packages/extensions/lib/common.dart

@@ -13,15 +13,7 @@ export 'src/common/cancellation_token_registration.dart';
 export 'src/common/cancellation_token_source.dart';
 export 'src/common/cancellation_token.dart';
 export 'src/common/disposable.dart';
+export 'src/common/string.dart';
+export 'src/common/enum.dart';
 
 typedef TimerCallback = void Function(Object? state);
-
-bool isNullOrWhitespace(String? value) {
-  if (value == null) return true;
-  return value.trim().isEmpty;
-}
-
-bool isNullOrEmpty(String? value) {
-  if (value == null) return true;
-  return value.isEmpty;
-}

packages/extensions/lib/diagnostics.dart

@@ -0,0 +1 @@
+library extensions.diagnostics;

packages/extensions/lib/hosting.dart

@@ -9,7 +9,6 @@ import 'src/hosting/host_application_builder_settings.dart';
 import 'src/hosting/host_builder.dart';
 import 'src/hosting/hosting_host_builder_extensions.dart';
 
-export 'common.dart';
 export 'configuration.dart';
 export 'dependency_injection.dart';
 export 'logging.dart';
@@ -42,7 +41,7 @@ export 'src/hosting/service_collection_hosted_service_extensions.dart';
 /// Initializes a new instance of the [HostBuilder] class with
 /// pre-configured defaults.
 HostBuilder createDefaultBuilder([List<String>? args]) {
-  var builder = HostBuilder();
+  var builder = DefaultHostBuilder();
   return builder.configureDefaults(args);
 }
 

packages/extensions/lib/src/common/enum.dart

@@ -0,0 +1,34 @@
+// Mixin to create Enum for bitflags uses.
+mixin EnumFlags on Enum {
+  // value receive a bitwise shift operation. It means "shift the
+  // bits of 1 to the left by index places".
+  //
+  //So,  "1,10,100,1000..." == 1,2,4,8,16....
+  int get value => 1 << index;
+  // Creates a operator "|" for enum.
+  int operator |(other) => value | other.value;
+
+  int operator &(other) => value & other.value;
+
+  int operator ^(other) => value ^ other.value;
+}
+
+// Extension "int" to verify that value contains the enum flag.
+extension EnumFlagsExtension on int {
+  bool hasFlag(EnumFlags flag) => this & flag.value == flag.value;
+}
+
+void main() {
+  final x = Car.ford | Car.honda;
+  print(x);
+  print(x.hasFlag(Car.honda));
+  final y = Car.ford & Car.subaru;
+  print(y);
+  print(y.hasFlag(Car.ford));
+}
+
+enum Car with EnumFlags {
+  ford,
+  honda,
+  subaru,
+}

packages/extensions/lib/src/common/exceptions/object_disposed_exception.dart

@@ -1,4 +1,4 @@
-import '../../../common.dart';
+import '../string.dart' as string;
 import 'invalid_operation_exception.dart';
 
 /// /// The exception that is thrown when accessing an object that was disposed.
@@ -16,7 +16,7 @@ class ObjectDisposedException extends InvalidOperationException {
   @override
   String? get message {
     final name = objectName;
-    if (isNullOrEmpty(name)) {
+    if (string.isNullOrEmpty(name)) {
       return super.message;
     }
 

packages/extensions/lib/src/common/string.dart

@@ -0,0 +1,15 @@
+bool isNullOrEmpty(String? value) {
+  if (value == null || value.isEmpty) return true;
+  if (value.isEmpty) return true;
+  return false;
+}
+
+bool isNullOrWhitespace(String? value) {
+  if (value == null) return true;
+  return value.trim().isEmpty;
+}
+
+bool equals(String value1, String value2, {bool ignoreCase = true}) =>
+    ignoreCase
+        ? value1.toLowerCase() == value2.toLowerCase()
+        : value1 == value2;