jackb (2) [Avatar] Offline
#1
The "box" explaining hasData(element) at the bottom of page 99 has an incorrect description (describes removal).
AurelioDeRosa (20) [Avatar] Offline
#2
Hi.

Thank you for taking the time to report this error. This was fixed during one of the book reviews, so it isn't included in the final version of the book.

Cheers