Rating: 

The best (or most frustrating) part is that much of example code does not work as printed in the book... If you are lucky the errata printed on the O'Reilly website shows the correction(s), but a number of occasions I have simply had to do the bug fixing myself... I guess this has meant that the concepts and application have sunk in more than they might have if the code as printed worked!

I still think that the author and publisher should check that what is printed actually works.