rusongyu
diff --git a/‎public/docs/_examples/dependency-injection/dart/.analysis_options
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diff --git a/‎public/docs/_examples/dependency-injection/dart/lib/app_component.dart
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diff --git a/‎public/docs/_examples/dependency-injection/dart/lib/app_component_1.dart
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diff --git a/‎public/docs/_examples/dependency-injection/dart/lib/app_component_2.dart
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diff --git a/‎public/docs/_examples/dependency-injection/dart/lib/app_config.dart
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diff --git a/‎public/docs/_examples/dependency-injection/dart/lib/car/car.dart
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diff --git a/‎public/docs/_examples/dependency-injection/dart/lib/car/car_component.dart
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diff --git a/‎public/docs/_examples/dependency-injection/dart/lib/car/car_creations.dart
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diff --git a/‎public/docs/_examples/dependency-injection/dart/lib/car/car_factory.dart
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@@ -0,0 +1,16 @@
+# Supported lint rules and documentation: http://dart-lang.github.io/linter/lints/
+linter:
+  rules:
+    - always_declare_return_types
+    - camel_case_types
+    - empty_constructor_bodies
+    - annotate_overrides
+    - avoid_init_to_null
+    - constant_identifier_names
+    - one_member_abstracts
+    - slash_for_doc_comments
+    - sort_constructors_first
+    - unnecessary_brace_in_string_interp
+
+analyzer:
+  # strong-mode: true
@@ -1,49 +1,54 @@
 // #docplaster
-
 // #docregion
-
 // #docregion imports
 import 'package:angular2/core.dart';
+
+import 'app_config.dart';
 import 'car/car_component.dart';
 import 'heroes/heroes_component.dart';
-import 'app_config.dart';
 import 'logger_service.dart';
 import 'user_service.dart';
-
+//PENDING: check whether we intend to hide injector_component.dart & providers_component.dart; if so, change docregion name?
 // #enddocregion imports
 import 'injector_component.dart';
 import 'providers_component.dart';
 
 @Component(
     selector: 'my-app',
     template: '''
-    <h1>{{title}}</h1>
-    <my-car></my-car>
-    <my-injectors></my-injectors>
-    <my-tests></my-tests>
-    <h2>User</h2>
-    <p id="user">
-      {{userInfo}}
-      <button (click)=\'nextUser()\'>Next User</button>
-    <p>
-    <my-heroes id="authorized" *ngIf="isAuthorized"></my-heroes>
-    <my-heroes id="unauthorized" *ngIf="!isAuthorized"></my-heroes>
-  ''',
-    directives: const [CarComponent, HeroesComponent, InjectorComponent, ProvidersComponent],
+      <h1>{{title}}</h1>
+      <my-car></my-car>
+      <my-injectors></my-injectors>
+      <my-tests></my-tests>
+      <h2>User</h2>
+      <p id="user">
+        {{userInfo}}
+        <button (click)="nextUser()">Next User</button>
+      <p>
+      <my-heroes id="authorized" *ngIf="isAuthorized"></my-heroes>
+      <my-heroes id="unauthorized" *ngIf="!isAuthorized"></my-heroes>''',
+    directives: const [
+      CarComponent,
+      HeroesComponent,
+      InjectorComponent,
+      ProvidersComponent
+    ],
 // #docregion providers
-    providers: const [Logger, UserService, const Provider(Config, useValue: CONFIG)]
+    providers: const [
+      Logger,
+      UserService,
+      const Provider(AppConfig, useValue: config1)]
 // #enddocregion providers
-    )
+)
 class AppComponent {
-  UserService _userService;
-  String title;
+  final UserService _userService;
+  final String title;
 
   //#docregion ctor
-  AppComponent(Config config, this._userService) {
-    title = config.title;
-  }
-
+  AppComponent(AppConfig config, this._userService)
+      : title = config.title;
   // #enddocregion ctor
+
   bool get isAuthorized {
     return user.isAuthorized;
   }
@@ -56,8 +61,7 @@ class AppComponent {
     return _userService.user;
   }
 
-  String get userInfo {
-    return 'Current user, ${user.name}, is ${isAuthorized ? "" : "not"} authorized. ';
-  }
+  String get userInfo => 'Current user, ${user.name}, is'
+      '${isAuthorized ? "" : " not"} authorized. ';
 }
 // #enddocregion
@@ -2,19 +2,19 @@
 
 // #docregion
 import 'package:angular2/core.dart';
+
 import 'car/car_component.dart';
 import 'heroes/heroes_component_1.dart';
 
 @Component(
     selector: 'my-app',
     template: '''
-    <h1>{{title}}</h1>
-    <my-car></my-car>
-    <my-heroes></my-heroes>
-  ''',
+      <h1>{{title}}</h1>
+      <my-car></my-car>
+      <my-heroes></my-heroes>''',
     directives: const [CarComponent, HeroesComponent])
 class AppComponent {
-  var title = 'Dependency Injection';
+  final String title = 'Dependency Injection';
 }
 // #enddocregion
 
 
@@ -2,34 +2,32 @@
 
 // #docregion imports
 import 'package:angular2/core.dart';
+
+import 'app_config.dart';
 import 'car/car_component.dart';
 import 'heroes/heroes_component_1.dart';
-import 'app_config.dart';
 import 'logger_service.dart';
-
 // #enddocregion imports
+
 @Component(
     selector: 'my-app',
     template: '''
-    <h1>{{title}}</h1>
-    <my-car></my-car>
-    <my-heroes></my-heroes>
-  ''',
+      <h1>{{title}}</h1>
+      <my-car></my-car>
+      <my-heroes></my-heroes>''',
     directives: const [
       CarComponent,
       HeroesComponent
     ],
     providers: const [
       Logger,
-      // #docregion provider-config
-      const Provider('app.config', useValue: CONFIG)
+      const Provider(AppConfig, useValue: config1)
     ])
 class AppComponent {
-  String title;
+  final String title;
 
   // #docregion ctor
-  AppComponent(@Inject('app.config') Config config) {
-    title = config.title;
-  }
+  AppComponent(AppConfig config)
+      : title = config.title;
+  // #enddocregion
 }
-// #enddocregion
@@ -1,29 +1,17 @@
-//#docregion
-
+// #docregion
 // #docregion token
 import 'package:angular2/core.dart';
 
-const APP_CONFIG = const OpaqueToken('app.config');
-// #enddocregion token
-
-//#docregion config
-abstract class Config {
-  final String apiEndpoint;
+//#docregion const-class
+@Injectable()
+class AppConfig {
+  final apiEndpoint;
   final String title;
 
-  const Config({this.apiEndpoint, this.title});
+  const AppConfig(this.apiEndpoint, this.title);
 }
+//#enddocregion const-class
 
-class ConfigImpl implements Config {
-  final String apiEndpoint;
-  final String title;
-
-  const ConfigImpl({this.apiEndpoint, this.title});
-}
-
-const CONFIG = const ConfigImpl(apiEndpoint: 'api.heroes.com', title: 'Dependency Injection');
-//#enddocregion config
-
-//#docregion config-hash
-const CONFIG_HASH = const {'apiEndpoint': 'api.heroes.com', 'title': 'Dependency Injection'};
-//#enddocregion config-hash
+//#docregion const-object
+const config1 = const AppConfig('api.heroes.com', 'Dependency Injection');
+//#enddocregion const-object
@@ -1,13 +1,14 @@
 // #docregion
-
 import 'package:angular2/core.dart';
 
+@Injectable()
 // #docregion engine
 class Engine {
-  int cylinders = 4;
+  final int cylinders = 4;
 }
 // #enddocregion engine
 
+@Injectable()
 // #docregion tires
 class Tires {
   String make = 'Flintstone';
@@ -18,15 +19,16 @@ class Tires {
 @Injectable()
 class Car {
   //#docregion car-ctor
-  Engine engine;
-  Tires tires;
+  final Engine engine;
+  final Tires tires;
   String description = 'DI';
 
   Car(this.engine, this.tires);
 
   // #enddocregion car-ctor
 
   // Method using the engine and tires
-  String drive() => '$description car with ${engine.cylinders} cylinders and ${tires.make} tires.';
+  String drive() => '$description car with ${engine.cylinders} cylinders'
+      ' and ${tires.make} tires.';
 }
 // #enddocregion car
@@ -1,29 +1,29 @@
 // #docregion
-
 import 'package:angular2/core.dart';
+
 import 'car.dart';
-import 'car_no_di.dart' as carNoDi;
-import 'car_factory.dart';
 import 'car_creations.dart' as carCreations;
+import 'car_factory.dart';
 import 'car_injector.dart';
+import 'car_no_di.dart' as carNoDi;
 
 @Component(
     selector: 'my-car',
     template: '''
-  <h2>Cars</h2>
-  <div id="di">{{car.drive()}}</div>
-  <div id="nodi">{{noDiCar.drive()}}</div>
-  <div id="injector">{{injectorCar.drive()}}</div>
-  <div id="factory">{{factoryCar.drive()}}</div>
-  <div id="simple">{{simpleCar.drive()}}</div>
-  <div id="super">{{superCar.drive()}}</div>
-  <div id="test">{{testCar.drive()}}</div>
-  ''',
+      <h2>Cars</h2>
+      <div id="di">{{car.drive()}}</div>
+      <div id="nodi">{{noDiCar.drive()}}</div>
+      <div id="injector">{{injectorCar.drive()}}</div>
+      <div id="factory">{{factoryCar.drive()}}</div>
+      <div id="simple">{{simpleCar.drive()}}</div>
+      <div id="super">{{superCar.drive()}}</div>
+      <div id="test">{{testCar.drive()}}</div>''',
     providers: const [Car, Engine, Tires])
 class CarComponent {
-  Car car;
+  final Car car;
+
+  CarComponent(this.car);
 
-  CarComponent(this.car) {}
   Car factoryCar = (new CarFactory()).createCar();
   Car injectorCar = useInjector();
   carNoDi.Car noDiCar = new carNoDi.Car();
 
@@ -1,12 +1,10 @@
-// Examples with car and engine variations
-
 // #docplaster
+// Examples with car and engine variations
 import 'car.dart';
 
 ///////// example 1 ////////////
 Car simpleCar() {
   //#docregion car-ctor-instantiation
-
   // Simple car with 4 cylinders and Flintstone tires.
   var car = new Car(new Engine(), new Tires());
   //#enddocregion car-ctor-instantiation
@@ -17,27 +15,26 @@ Car simpleCar() {
 
 //#docregion car-ctor-instantiation-with-param
 class Engine2 implements Engine {
-  int cylinders;
+  final int cylinders;
 
   Engine2(this.cylinders);
 }
-
 //#enddocregion car-ctor-instantiation-with-param
-Car superCar() {
-  //#docregion car-ctor-instantiation-with-param
 
-  // Super car with 12 cylinders and Flintstone tires.
-  var bigCylinders = 12;
-  var car = new Car(new Engine2(bigCylinders), new Tires());
-  //#enddocregion car-ctor-instantiation-with-param
+Car superCar() {
+//#docregion car-ctor-instantiation-with-param
+// Super car with 12 cylinders and Flintstone tires.
+var bigCylinders = 12;
+var car = new Car(new Engine2(bigCylinders), new Tires());
+//#enddocregion car-ctor-instantiation-with-param
   car.description = 'Super';
   return car;
 }
 /////////// example 3 //////////
 
 //#docregion car-ctor-instantiation-with-mocks
 class MockEngine extends Engine {
-  int cylinders = 8;
+  final int cylinders = 8;
 }
 
 class MockTires extends Tires {
@@ -46,11 +43,10 @@ class MockTires extends Tires {
 
 //#enddocregion car-ctor-instantiation-with-mocks
 Car testCar() {
-  //#docregion car-ctor-instantiation-with-mocks
-
-  // Test car with 8 cylinders and YokoGoodStone tires.
-  var car = new Car(new MockEngine(), new MockTires());
-  //#enddocregion car-ctor-instantiation-with-mocks
+//#docregion car-ctor-instantiation-with-mocks
+// Test car with 8 cylinders and YokoGoodStone tires.
+var car = new Car(new MockEngine(), new MockTires());
+//#enddocregion car-ctor-instantiation-with-mocks
   car.description = 'Test';
   return car;
 }
@@ -1,15 +1,13 @@
 // #docregion
-
 import 'car.dart';
 
+// BAD pattern!
 class CarFactory {
   Car createCar() {
-    var car = new Car(createEngine(), createTires());
-    car.description = 'Factory';
-    return car;
+    return new Car(createEngine(), createTires())
+      ..description = 'Factory';
   }
 
   Engine createEngine() => new Engine();
-
   Tires createTires() => new Tires();
 }