I've finished reading "Design Patterns in Ruby"

I've finished reading Design Patterns in Ruby. And I found some leverage points for myself.

• Both some class and its subclass can access same class variables. I did not know that.
• This book contains one clear sample of coding Ruby's internal DSL.
• Author encourages Meta-programming using method_missing like ActiveRecord's find_by_... method. But IMO I don't like it so as Meta-programming.

In conclusion, This book is having worth to read for every Rubyist (from experts to newbie).