This is the 5th edition of Programming Ruby, and it’s up to date with Ruby 3.3, released last month. There have been 11(!) Ruby releases since the last version of the book, and we cover all of them.

The book is new and improved up and down the line with the latest Ruby syntax, big newer features like pattern matching, up-to-date discussions of the biggest third-party tools, and just taking advantage of a whole decade more of why Ruby experts love Ruby and what parts of Ruby are most used.