I'd like to thank Don Clugston for his tireless role as technical reviewer, and the community of D enthusiasts across the world who contribute daily to Tango in one way or another-you all know who you are! Also, Tango would not exist without the ongoing efforts of Brad Anderson, who selflessly runs and operates the dsource.org host. Thank you.

Kris Bell

A very big thank you to Inger Merete and Magnus for accepting that I spent vacation time writing parts of this book. Also, thanks to Businesscape for bearing with me during this period, and Jon Espen especially, for valuable input.

Lars Ivar Igesund

I would like to thank my wife Leah for being a constant source of inspiration in my life. Also, thanks to the Tango team, whose expertise and dedication have made Tango a project to be proud of; Don Clugston, for his invaluable insight and criticism; the Tango community, for their unfaltering dedication; and Walter Bright, for creating such a wonderful programming language.

Sean Kelly

Thanks to Walter Bright for creating such a great programming language; to Jason Gilmore for getting the book process going; to Beth Christmas and the other publishing staff we've interacted with, for putting up so patiently with four noob authors; to my coauthors for inviting me to participate in Tango and this book project; and to my wife, Mi Kyoung, for being so understanding and supportive over the past few years while I've spent a tremendously selfish amount of time in front of the computer or with my head buried in books like this one.

Michael Parker