Ruby and the Interpreter Pattern

Hi, I will give my opinion about the article titled: "Language Design and Implementation using Ruby and the Interpreter Pattern” by Ariel Ortiz, this article explains the S-expression Interpreter Framework that it was developed by Ariel Ortiz. 

Ariel has a lot of experience in the programming area and it is very interesting the job that he did using the Ruby programming language, I didn't know that Ruby has the necessary speed in order to do those features because before I read this article, I thought that it was a very slow programming language, but now I can see that it has a lot of features that can help you in order to do great things in a reasonable portion of time, I have always liked the way that Ortiz teaches and the article is not the exception because he always explains in a very understandable way complicated topics and he always try to give interesting facts about what he explains and the details of certain tools, for example, in the article, he took the time to explain why he did choose the S-Expressions and why did he use the ruby programming language, telling the main characteristics of them so you can have a clearer way to see the reasons and, of course, it explains the framework with good examples so you can understand better.