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());
  }
  // ..
  // ..
}

graphicbeacon

// ..
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

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;

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);

graphicbeacon

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();

graphicbeacon

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

graphicbeacon

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

graphicbeacon

import 'dart:io' show Platform;
import 'dart:async' show runZoned;
import 'package:path/path.dart' show join, dirname;
import 'package:shelf/shelf_io.dart' as io;
import 'package:shelf_static/shelf_static.dart';

void main() {
  // Assumes the server lives in bin/ and that `webdev build` ran
  var pathToBuild = join(dirname(Platform.script.toFilePath()), '..', 'build');

graphicbeacon

void main() async {
  var str1 = 'Lorem';
  var str2 = '$str1 ipsum'; // String interpolation
  var str3 = '''Multi
Line
$str1 $str2'''; // Multi line string
  
  print(str1.contains('rem')); // true
  
  print(str2.startsWith('Lorem')); // true

graphicbeacon

void main() {
  var now = new DateTime.now();
  var berlinWallFell = new DateTime.utc(1989, 11, 9);
  var moonLanding = DateTime.parse('1969-07-20 20:18:04Z');
  
  print(now);
  print(berlinWallFell);
  print(moonLanding);
  
  print('\n---\n');