
There are thousands of books that will take you from illiterate to novice in any programming language. But finding those that will take you from novice or intermediate to expert is hard. I remember reading Effective Java some years ago and wishing I had something like that for Python. I’ve never found one.
Metaprogramming Ruby is a great book full of very interesting knowledge, full of those things that separate a Ruby programmer and an export Ruby programmer. Before finishing the book I’ve already put to use some of the lessons and it saved me a lot of time. The book payed for itself before I’ve finished reading and I really recommend it to anyone who is serious about coding in Ruby.
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