Textbook in PDF format Retaining the same organization as its predecessor, this second edition adds considerable material on new topics. This book will excite students on the capabilities of computer programming and inspire them to delve deeper into the computer science discipline with an introduction to a time-saving programming language-Ruby. The book focuses on the features of Ruby, including such topics as strings, class hierarchies, arrays and hashes, loops, methods, exception handling, symbols, YAML, and debugging