Rating: 

Typos in IT field should be unpardonable. This book and example suffers terribly with that malaise. In spite of the good work done by authors, I ended up with a disdain for their reckless attitude. Years since releasing the book, they haven't even bothered to go through errata suggested by customers. Shameless indeed! I wonder whether the idiots should be let to reap dividends still - you know what I mean!