First of all, I would like to thank the reviewer of this book, Jan Koehnlein. His constructive criticism, extensive suggestions, and careful error reporting helped extremely in improving the book. Since this is a second edition, which contains some material from the previous edition, I am also grateful to the reviewers of the first edition, Henrik Lindberg, Pedro J. Molina, and Sebastian Zarnekow.

I'm also grateful to all the people from Packt I dealt with, Sweta Basu and Reshma Raman. I would also like to thank Divij Kotian and Rutuja Vaze for their continuous support throughout the book.

This book would not have been possible without the efforts that all the skilled Xtext developers have put in this framework. Most of them are always present in the Xtext forum and are very active in providing help to the users. Many other people not necessarily involved with Xtext development are always present in the forum and are willing to provide help and suggestions in solving typical problems about Xtext. They also regularly write on their own blogs about examples and best practices with Xtext. Many contents in this book are inspired by the material found on the forum and on such blogs. The list would be quite long, so I will only mention the ones with whom I interacted most: Christian Dietrich, Moritz Eysholdt, Dennis Huebner, Jan Koehnlein, Anton Kosyakov, Henrik Lindberg, Ed Merks, Holger Schill, Miro Spoenemann, and Karsten Thoms.

I am particularly grateful to Sebastian Zarnekow, one of the main Xtext committers. In the last few years, he has always been willing to help me to get familiar with most of the things about Xtext and Xbase internals I know today.

A very special thank you to Sven Efftinge, the project lead of Xtext, for creating such a cool and impressive framework. Not to mention the nice foreword Sven wrote for this second edition. I am also grateful to Sven for nominating me as an Xtext committer.

I am grateful to itemis Schweiz for sponsoring the writing of this book, and in particular, I am thankful to Serano Colameo.

Last but not least, a big thank you to my parents for always supporting me through all these years. A warm thank you to my Silvia, the "rainbow" of my life, for being there and for not complaining about all the spare time that this book has stolen from us.