Is the Ruby programming language book still valid in ruby 2.2.2?
I am studying ruby. I was wondering if The Ruby Programming Language book is still valid in ruby 2.2.2 even though the book is written for ruby 1.8 and 1.9?
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The Well Grounded Rubyist was published recently and covers Ruby 2.1. There were no big changes between 2.1 and 2.2, so the book should cover everything you need to know.
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