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David Chelimsky, Dave Astels
Behaviour Driven Development is about writing software that matters. It is an approach to agile software development that takes cues from Test Driven Development, Domain Driven Design, and Acceptance Test Driven Planning. RSpec and Cucumber are the leading Behaviour Driven Development tools in Ruby. RSpec supports Test Driven Development in Ruby through the BDD lens, keeping your focus on design and documentation while also supporting thorough testing and quick fault isolation. Cucumber, RSpec's steadfast companion, supports Acceptance Test Driven Planning with business-facing, executable requirements documentation that helps to ensure that you are writing relevant software targeted at real business needs. The RSpec Book will introduce you to RSpec, Cucumber, and a number of other tools that make up the Ruby BDD family. Replete with tutorials and practical examples, the RSpec Book will help you get your BDD on, taking you from executable requirements to working software that is clean, well tested, well documented, flexible and highly maintainable.
Chad Pytel, Tammer Saleh
How to avoid the most common code and design mistakes in Ruby on Rails applications - and refactor away problems that already exist • •A unique guide to improving Rails code quality, performance, reliability, stability, scalability, and maintainability. •Practical, proven techniques for ensuring that every new Rails application reflects today's best practices. •Highly realistic: reflects Rails mistakes and bad habits the authors have repeatedly seen 'in the wild' As millions of web developers have turned to the Ruby on Rails framework, many have fallen victim to the same mistakes, misconceptions, and bad habits. These errors can significantly reduce code quality, performance, reliability, stability, scalability, and maintainability. In some cases, they can even derail a project. In this book, these common Rails code and design problems are compiled into a complete set of AntiPatterns: what they look like, why they happen, why they're bad - and what to do instead. Every AntiPattern is illuminated with real world code, as well as specific guidance for refactoring existing bad code or design to reflect sound Object Oriented principles and established Ruby on Rails best practices. This 'cookbook' is organized into short, concise, easy-to-use chapters - each outlining a single common AntiPattern and offering detailed solutions. Until now, this information was difficult to find - and much of it wasn't available at all. Using Rails AntiPatterns, developers can dramatically improve the quality of both new and existing Rails applications; avoid future bad practices; and establish more effective Rails coding standards throughout the development organization.
David Thomas, Chad Fowler, Andrew Hunt
Summary: Ruby 1.9 was a major release of the language: it introduced multinationalization, new block syntax and scoping rules, a new, faster, virtual machine, and hundreds of new methods in dozens of new classes and modules. Ruby 2.0 is less radical--it has keyword arguments, a new regexp engine, and some library changes. This book describes it all. The first quarter of the book is a tutorial introduction that gets you up to speed with the Ruby language and the most important classes and libraries. Download and play with the hundreds of code samples as your experiment with the language. The second section looks at real-world Ruby, covering the Ruby environment, how to package, document, and distribute code, and how to work with encodings. The third part of the book is more advanced. In it, you'll find a full description of the language, an explanation of duck typing, and a detailed description of the Ruby object model and metaprogramming. The book ends with a reference section: comprehensive and detailed documentation of Ruby's libraries. You'll find descriptions and examples of more than 1,300 methods in 58 built-in classes and modules, along with brief descriptions of 97 standard libraries. Ruby makes your programming more productive; it makes coding fun again. And this book will get you up to speed with the very latest Ruby, quickly and enjoyably.
George Casella, Roger L. Berger
Casella and Berger's new edition builds the theoretical statistics from the first principals of probability theory. Thoroughly and completely, the authors start with the basics of probability and then move on to develop the theory of statistical inference using techniques, definitions, and statistical concepts.