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// Populate DB
var books = [
  new Book()
    ..title = "Head First Design Patterns"
    ..authors = (new ManagedSet()
      ..add(new Author()..name = "Bert Bates")
      ..add(new Author()..name = "Kathy Sierra")
      ..add(new Author()..name = "Eric Freeman"))
    ..year = 2004,
  new Book()

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// Query for books
await Future.forEach(books, (Book b) async {
  var query = new Query<Book>()..values = b;
  var insertedBook = await query.insert();
  
  // Query for authors
  await Future.forEach(b.authors, (Author a) async {
    var query = new Query<Author>()
      ..values = a
      ..values.book = insertedBook; // Reference to its associated book, which becomes a foreign key column `book_id`

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// ...
// ...
test("GET /books returns list of books", () async {
  // ..
  // ..
  expectResponse(response, 200, body: allOf([
      hasLength(greaterThan(0)),
      everyElement(partial(
        {
          "title": isString,

graphicbeacon

// ..
class BooksController extends HTTPController {
  @httpGet
  Future<Response> getAllBooks() async {
    var query = new Query<Book>()..join(set: (book) => book.authors);
    return new Response.ok(await query.fetch());
  }
  // ..
  // ..
}

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// ..
class BooksController extends HTTPController {
  //..
  @httpPost
  Future<Response> addBook(@HTTPBody() Book book) async {
    var query = new Query<Book>()..values = book;
    var insertedBook = await query.insert();

    // Insert authors from payload
    await Future.forEach(book.authors, (Author a) async {

graphicbeacon

import 'dart:async';

void main() {
  List<String> alphabets = 'abcdefghijklmnopqrstuvwxyz'.split('');
  var stream = new Stream.fromIterable(alphabets);
  var count = 1;
  
  stream.listen((char) {
    Timer(Duration(seconds: 1 * count), () {
      print(char);

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void main() {
  // Variables and constants
  var edition = 2;
  int year = 2011;
  const language = 'Dart';
  String name; // == null
  
  // Number
  var num1 = 5;
  var num2 = 10.0;

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void main() {
  // forEach()
  var fruits = ['banana', 'pineapple', 'watermelon'];
  fruits.forEach((fruit) => print(fruit)); // => banana pineapple watermelon
  
  print('\n---\n');
  
  
  // map()
  var mappedFruits = fruits.map((fruit) => 'I love $fruit').toList();

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<span class="clock"></span>

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void main() {
  var user = {
    "firstName": "Tom",
    "age": 25,
  };
  
  // 1. addAll()
  user.addAll({
    "lastName": "Smith",
    "age": 26,