06 August 2016 P3.0 (Printing)

Fixed errata.

03 April 2015 P2.0 (Printing)

  • Renamed the method in section “Quiz: Ruby#” to avoid potential conflicts with Ruby’s Module#using().
  • Replaced “money” gem with “monetize” gem in section “The Money Example”.
  • Fixed a few small errata.

12 August 2014 P1.0 (Printing)

First printing.

28 July 2014 B4.0

Production is complete, so this is the final beta. Now it’s on to layout and the printer.

19 June 2014 B3.0

This is the last Beta before going to production. It contains many tweaks and fixes, plus the last remaining chapter: Chapter 12, The Evolution of Attribute Methods.

03 April 2014 B2.0

We have a brand new chapter for you: Chapter 11, The Rise and Fall of alias_method_chain, on page 189.

10 March 2014 B1.0

Initial beta release.