The latest version of the book is P2.0, released about 1 month ago. If you've bought a PDF of the book and would like to upgrade it to this version (for free), visit your home page.
By default this page displays the errata for the latest version of the book. If you have a previous version, select it here:
If you've found a new error, please submit it.
- Reported in: P2.0 (27-Oct-15)
PDF page: 104
The text and example describing counting the left and right arrows from the previous version of the book is missing, so the paragraph starting "Now, we create one signal with foldp." doesn't make sense.--Euan Griffiths