Exercise 10 and exercises 13, their code sample is switched. The code example of ex 10 is on 13 and vice versa.
Yes, do you have a paper copy of the book? That was an early mis-print.
I was reading from kindle cloud reader.
That’s not good. That should have been fixed long ago. Can you take a photo or screenshot of it and post it here or email it to firstname.lastname@example.org so I can tell the publisher.