Rating: 

I would have to agree that the lack of functional examples does cloud the quality of this book. The text is good, but not having functional examples leaves the complication of whether we should do what the text say or what the example does.

Now I am the first to admit that errors occur. That is what code downloads and errata are supposed to fix. Not only does the code download from www.oreily.com not fix some problems, but does not even include all of the examples present in the book.

As a learning book where you are going to read all the details, the book is good. As a "quck grab it" reference this book fails because of the errors.