The Well-Grounded Rubyist, Second Edition -David A. Black

This is a good time for Ruby! Itâ€s powerful like Java or C++, and has dynamic features that let your code react gracefully to changes at runtime. And itâ€s elegant, so creating applications, development tools, and administrative scripts is easier and more straightforward. With the long-awaited Ruby 2, an active development community, and countless libraries and productivity tools, Ruby has come into its own. The Well-Grounded Rubyist, Second Edition is a beautifully written tutorial that begins with your first Ruby program and goes on to explore sophisticated topics like callable objects, reflection, and threading. The book concentrates on the language, preparing you to use Ruby in any way you choose. This second edition includes coverage of new Ruby features such as keyword arguments, lazy enumerators, and Module#prepend, along with updated information on new and changed core classes and methods.

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