Programming Ruby: The Pragmatic Programmer's Guide
by David Thomas, Andrew Hunt
Publisher: Addison-Wesley 2000
Number of pages: 608
A guide to working with the object-oriented programming language, Ruby, which allows for programming without extra syntax or code. Shows how to easily mine the Ruby language, teaching the basics, plus how to write large programs, how to extend Ruby using C code, and more.
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by Gregory T. Brown - O'Reilly Media
Ruby Best Practices aims to help Ruby developers from a wide range of skill levels improve their fundamental understanding of the language via exposure to the common practices and idioms that many seasoned Rubyists take for granted.
by why the lucky stiff
This is just a small illustrated online-only Ruby book. It won't crush you. It's light as a feather (because I haven't finished it yet--hehe). And there's a reason this book will stay light: because Ruby is simple to learn.
by Michael Hartl - Addison-Wesley
Leading Rails developer teaches Rails 3 by guiding you through the development of your own complete sample application using the latest techniques in Rails web development. Hartl explains how each new technique solves a real-world problem.
RubyGems is the premier ruby packaging system. It provides: A standard format for distributing Ruby programs and libraries; An tool for managing the installation of gem packages; A gem server utility for serving gems from any machine...