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The latest version of the book is P1.0, released about 1 year 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:

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  • Typo
  • Tech. error
  • Suggestion
  • Maybe next edition
  • Not a problem
  • Reported in: P1.0 (08-Apr-18)
PDF page: 3
Book's example: list = [1, 2, 3, 4] List.delete_at(list, -1) # => [4] My iex result: iex(1)> list = [1, 2, 3, 4] [1, 2, 3, 4] iex(2)> List.d...more...
  • Reported in: P1.0 (24-Dec-18)
Paper page: 15
"The || is kind of or operator that works with Booleans and values." should be "The || is a kind of or operator...". The sentence from the book is mis...more...
  • Reported in: P1.0 (24-Dec-18)
Paper page: 18
Example for Creating Anonymous Functions says "we'll build messages to say hello to Ana, John, and the world." The first example lists Mary instead of...more...
  • Reported in: P1.0 (02-Mar-18)
Paper page: 22
This sentence: " That’s why the anonymous function can’t see the make_answer variable: it was defined after the function-creation expression" Shou...more...
  • Reported in: P1.0 (08-Dec-18)
Paper page: 31
In the last exercise of the "Your Turn" section there is the following sentence: The boxes can’t have fewer matchstick that they can hold; they mus...more...
  • Reported in: P1.0 (07-Jan-19)
Paper page: 78
In the first paragraph of the page, the second and third sentences read as "When we create recursive functions, we call functions that have the same n...more...