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SWIFT FOR PROGRAMMERS
DEITEL DEVELOPER SERIES
Paul Deitel Harvey Deitel
Deitel & Associates, Inc.
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On file
2015 Pearson Education, Inc.
All rights reserved. Printed in the United States of America. This publication is protected by copyright, and permission must be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. To obtain permission to use material from this work, please submit a written request to Pearson Education, Inc., Permissions Department, One Lake Street, Upper Saddle River, New Jersey 07458, or you may fax your request to (201) 236-3290.
ISBN-13: 978-0-13402136-2
ISBN-10: 0-13-402136-3
Text printed in the United States at Edwards Brothers Malloy in Ann Arbor, Michigan.
First printing, January 2015
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DEITEL, the double-thumbs-up bug and DIVE-INTO are registered trademarks of Deitel & Associates, Inc.
Apple, iOS, iPhone, iPad, iPod touch, Xcode, Swift, Objective-C, Cocoa and Cocoa Touch are trademarks or registered trademarks of Apple, Inc.
Java is a registered trademark of Oracle and/or its affiliates. Other names may be trademarks of their respective owners.
Throughout this book, trademarks are used. Rather than put a trademark symbol in every occurrence of a trademarked name, we state that we are using the names in an editorial fashion only and to the benefit of the trademark owner, with no intention of infringement of the trademark.
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In Loving Memory of Aunt Rochelle Deitel:
The most positive person we ever knew.
You brought joy to our lives.
Harvey, Barbara, Paul and Abbey
Contents
Preface
Welcome to Apples new Swift programming language and