small medium large xlarge

The latest version of the book is P2.0, released 3 months ago. If you've bought a PDF of the book and would like to update 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.

  • Typo
  • Tech. error
  • Suggestion
  • Maybe next edition
  • Not a problem
  • Reported in: P1.0 (02-Sep-19)
PDF page: 101
In FlushStreamQueue -> ( { model | feed = ((++) model.streamQueue) model.feed , streamQueue = [] } , Cmd.none ) the ...more...
  • Reported in: P2.0 (28-Nov-19)
PDF page: 104
To answer the question "How do I get the salad-builder example to run on Elm 0.19.1, Node 13.2 and Webpack 4?", here is how I've done it (YMMV) - this...more...
  • Reported in: P1.0 (13-Aug-19)
PDF page: 104
Hello, I am now on chapter 6 of your book. I just copied the code as mentioned, and run npm install and got error as you see in this gist (add https p...more...