We try to keep our books accurate, but sometimes mistakes creep in. This page lists the errors submitted by our astute readers. If you've found a new error, please submit it.

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

Key: Typo Tech. Error Suggestion Not a problem Next edition

By default this page displays the errata for the latest version of the book. If you have a previous version, select it here:  

(To find out what version you have, look at the copyright page, a few pages in from the front of the book. If it says (say) 'Second Printing', then here it'll be P2.0. If there are interim PDF releases in that printing, they'll be 2.1, 2.2, and so on.)

PDF Paper Description Found in Fixed in
5
#78303: These lines are missing the concatenation of underscore into the filename string. backup_file = database + Time.now.strftime("%Y%m%d") bac...more...
P1.0
10-Apr-15
20

#77322: opts.on("- i","–iteration") => opts.on("- i","–-iteration") --Ignazioc

P1.0
13-Sep-14
26
#77323: running the command "bundle exec bin/todo new" produce an error if all the gems are not installed. The error is: "Could not find gem 'aruba ...more...
P1.0
13-Sep-14
29
#77324: "bin/todo -f ~/todo.txt new -f "A new task" "Another task" the right command is "bundle exec bin/todo -f ~/todo.txt new -f "A new task" "Ano...more...
P1.0
13-Sep-14
42
#76385: The code on the page sets the default_value of the todo command's filename flag to "~/.todo.txt". This causes trouble later, because Ruby's Fi...more...
P1.0
07-Feb-14
118
#53332: Chapter 8 Section8.1 Paragraph 2: Rather than solve this problem at the same we learn about the mechanics of testing, let’s take things one ...more...
P1.0
10-Dec-13
126
#76444: On this page we're adding code to Cucumber's env.rb, to modify ENV['HOME'] so a test won't touch the user's real todo list. Paragraph three be...more...
David Copeland says: This is not my experience. Running the tests with nothing in /tmp and everything works fine. Can you post to the forum what you are seeing specifically?
P1.0
21-Feb-14
168

#58775: Rainbow gem notice: Sickill::Rainbow.enabled= is deprecated, use Rainbow.enabled= instead.--Francisco Laguna

P1.0
29-Dec-13