Baird examples demonstrate key features of language (such as inheritance, encapsulation, high-level functions, and recursion), while simultaneously solving difficult problems (such as validating XML, creating a bilingual program, and creating command-line interface). You will learn how to: Use the interactive Ruby shell (irb) to learn the key features of the language Extend Ruby using rubygems, Ruby package manager Create numerical utilities, as well as utilities that process and analyze HTML / XML Implement purely functional and metaprogramming techniques to save time and Optimize business, profiles, and test your code to ensure that not only do its job, but not very well make a web application using Rails Ruby is the fastest growing programming language today, and for good reason: Its elegant syntax and readable code make for prolific and happy programmers. Ruby by Example shows you how to take advantage of Ruby as you explore Ruby's fundamental concepts in action.