# Erratas

To my utter shock, it turns out that I am not perfect. There are mistakes in my books!

A couple of readers made me aware of a typo in **Functional Programming in R**. It is just a typo, but I can easily see why it can confuse readers.

Much much worse is an error in **Functional Data-Structures in R**. An entire section is utter rubbish. Please donâ€™t read the section on dequeus. The errata has a correct implementation and this post has a much better explanation than the book.

If you find errors in my books, then *please* let me know so I can update the errata lists and fix them if there are more editions.