Head First Kotlin Dawn Griffiths David Griffiths Head First Kotlin by Dawn Griffiths and David Griffiths Copyright © 2019 Dawn Griffiths and David Griffiths. All rights reserved. Printed in Canada. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472. O’Reilly Media books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles (http://oreilly.com). For more information, contact our corporate/institutional sales department: (800) 998-9938 or