Dart Essentials PDF
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Dart Essentials Design and build full-featured web and CLI apps using the powerful Dart language and its libraries and tools Martin Sikora BIRMINGHAM - MUMBAI Dart Essentials Copyright © 2015 Packt Publishing All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews. Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book. Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information. First published: May 2015 Production reference: 1190515 Published by Packt Publishing Ltd. Livery Place 35 Livery Street Birmingham B3 2PB, UK. ISBN 978-1-78398-960-7 www.packtpub.com Credits Author Project Coordinator Martin Sikora Milton Dsouza Reviewers Proofreaders Lamoriniere Cedric Stephen Copestake Rokesh Jankie Safis Editing Hans Van den Keybus Frederik Leonhardt Indexer Hemangini Bari Marko Vuksanovic Graphics Commissioning Editor Sheetal Aute Taron Pereira Production Coordinator Acquisition Editor Shantanu N. Zagade Shaon Basu Cover Work Content Development Editor Shantanu N. Zagade Akashdeep Kundu Technical Editor Mrunal M. Chavan Copy Editor Stuti Srivastava About the Author Martin Sikora has been programming professionally since 2006 for companies such as Miton CZ and Symbio Digital in various languages, mostly PHP. Since 2012, he's been freelancing, working on projects in Python, PHP, Dart, Objective-C, and AngularJS. He's a Zend Certified Engineer and was a member of the winning team at Google Dart Hackathon 2012 in Prague. About the Reviewers Lamoriniere Cedric is a software engineer and a graduate from a French engineering school, who mostly uses C++ during his day job. His taste for innovation has led him to try out a considerable amount of various web frameworks, technologies, and languages. Among these languages, he has taken a strong interest in the Dart language for its ease of use and efficiency. It allows developers to get things done in a timely manner. Rokesh Jankie graduated in 1998 with a master's degree in computer science from Leiden University, the Netherlands. He specialized in algorithms and NP-complete problems. Scheduling problems that can be NP-complete was his area of focus. He started working for the University of Leiden, ORTEC consultants, and Ponte Vecchio, and later, worked for Qualogy. At Qualogy, he used what he had experienced till that point to set up a product. Qualogy works in the field of Oracle and Java technologies. With the current set of technologies, interesting products can be delivered, and this is what QAFE is (refer to www.qafe.com for more information). QAFE Inc. has a very dynamic team, which works in an agile way (going to production weekly, quickly adjusting to market needs, and so on). In the team, they don't distinguish between senior developers and junior developers, but they recruit very good software engineers. This gives a new dynamic to the team and makes it a great experience on a daily basis. Books that Rokesh has worked on include Dart in Action, Manning Publications, and HTML5 and CSS Responsive Web Design Cookbook and HTML5 Canvas Cookbook, both by Packt Publishing. I'm very grateful to my parents and my wife for supporting my enthusiasm for computer science. My 2-year old son inspires me to be the best dad, and he makes sure that I work hard to create a better future for him through the application of computer science topics in daily life and by sharing my knowledge on this subject. Reviewing this book is part of that journey. Hans Van den Keybus is a Belgium-based Flash, Flex, and Google Dart developer, working for his one-man company called dotdotcommadot. Although he started off creating simple games and animations for some well-known design companies, he got the most fun out of structuring the code behind it. His main areas of expertise are OOP, design patterns, and microarchitectures. Currently, he's working on a major project developed in Google Dart for his customers MSC and Maersk. Whenever he's not programming, Hans is probably playing some sketchy basement with his even sketchier grindcore band. Frederik Leonhardt is a tech enthusiast and software engineer with more than 5 years of experience in Java, Java EE, and related frameworks. He likes to delve into new technologies, and he started using Dart with its first beta release in 2012. He likes to contribute to the open source community and is currently working for Catalyst IT, a team of open source technologists. In the past, he has worked as a researcher for the Institute of Information Systems at the German Research Center for Artificial Intelligence, where he published papers on recommender systems and their application in the mobile health domain. He recently moved to New Zealand and enjoys the relaxed Kiwi lifestyle and the beautiful outdoors, especially for tramping and photography. Marko Vuksanovic is a consultant who specializes in software development and delivery. He received his master's degree in electrical engineering and computing from the University of Zagreb, Croatia, in 2009. He is currently employed by ThoughtWorks Australia, where he helps deliver outstanding products to clients. He has spent the last 10 years working with web applications, and during this period, he has been involved in numerous open source, as well as closed source, projects. He is very active within the Dart community and used to actively contribute to AngularDart projects. His other interests lie in the information security and machine-learning spaces. When not providing services to clients, Marko spends time acquiring new skills, breaking things, reverse engineering, or enjoying some time off at one of Australia's beaches or a nearby tennis court. www.PacktPub.com Support files, eBooks, discount offers, and more For support files and downloads related to your book, please visit www.PacktPub.com. Did you know that Packt offers eBook versions of every book published, with PDF and ePub files available? You can upgrade to the eBook version at www.PacktPub.com and as a print book customer, you are entitled to a discount on the eBook copy. Get in touch with us at [email protected] for more details. At www.PacktPub.com, you can also read a collection of free technical articles, sign up for a range of free newsletters and receive exclusive discounts and offers on Packt books and eBooks. TM https://www2.packtpub.com/books/subscription/packtlib Do you need instant solutions to your IT questions? 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Table of Contents Preface vii Chapter 1: Getting Started with Dart 1 What is Dart? 1 Why choose Dart? 2 Installing the Dart SDK 3 Dart Editor 3 Writing a greeting for all Dartisans 4 pubspec.yaml 5 index.html 6 The main() function 7 Running and debugging code in Dartium 12 Compiling Dart to JavaScript 13 The Dart language tour 15 The static checker 15 Variables 16 Built-in types 16 Functions and parameters 17 Class properties 18 Class inheritance and abstract classes 18 Constructors 19 Exceptions 20 Using static types 20 Summary 21 [ i ]
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