Acknowledgments

For the Japanese Edition

I would like to thank the development team of Ohmsha, Ltd., for publishing the dRuby book again; Akira Yamada, Kouhei Sutou, and Shintaro Kakutani for reviews; and the fireflies from Houki River for encouraging me.

For the English Edition

I would like to thank Makoto Inoue for translating this book, Dave Thomas and Susannah Pfalzer of Pragmatic Bookshelf for giving me the opportunity to publish the English edition, Hisashi Morita and Shintaro Kakutani for advice based on knowledge of the Japanese edition, and all the reviewers—Eric Hodel, Ivo Balbaert, Sam Rose, Kim Shrier, Javier Collado, Brian Schau, Tibor Simic, Stefan Turalski, Colin Yates, Leonard Chin, Elise Huard, Jesse Rosalia, and Chad Dumler-Montplaisir.