Rails just keeps on changing. Rails 3 and Ruby 1.9 bring hundreds of improvements, including new APIs and substantial performance enhancements. The fourth edition of this award-winning classic has been reorganized and refocused so it's more useful than ever before for developers new to Ruby and Rails.

Rails...

Each chapter in this book helps you identify, explain, and correct a unique and dangerous antipattern. The four parts of the book group the anti?patterns in terms of logical database design, physical database design, queries, and application development.

The chances are good that your application's database...

Android is a software toolkit for mobile phones, created by Google and the Open Handset Alliance. It's inside millions of cell phones and other mobile devices, making Android a major platform for application developers. That could be your own program running on all those devices.

Within minutes, Hello,...

Hold an iPad in your hands and you'll know what the fuss is all about. Select an app and the device disappears as you find yourself immersed in the experience--the iPad defines a new category for devices. iPad Programming shows you how to build apps for the iPad that people will love to use.

This...

• what characteristics make a good agile team and how to form your own

• ...

Ruby, Io, Prolog, Scala, Erlang, Clojure, Haskell. With Seven Languages in Seven Weeks, by Bruce A. Tate, you'll go beyond the syntax-and beyond the 20-minute tutorial you'll find someplace online. This book has an audacious goal: to present a meaningful exploration of seven languages within a single book. Rather than...

Finding cool languages, tools, or development techniques is easy-new ones are popping up every day. Convincing co-workers to adopt them is the hard part. The problem is political, and in political fights, logic doesn't win for logic's sake. Hard evidence of a superior solution is not enough. But that reality can be tough for...

Subversion sets the standard in version control systems. Championed by open-source developers, Subversion is behind some of today's biggest and most important software, including Apache, FreeBSD, Ruby, and MediaWiki. But more than just a tool for open-source collaboration, Subversion has made a significant impact in the corporate...

TDD is a modern programming practice C developers need to know. It's a different way to program---unit tests are written in a tight feedback loop with the production code, assuring your code does what you think. You get valuable feedback every few minutes. You find mistakes before they become bugs. You get early warning of design...

Cloud computing is an innovative and exciting style of programming and using computers. It creates tremendous opportunities for software developers: cloud computing can provide an amazing new platform for building new kinds applications. In this chapter, we’ll look at the basic concepts: what cloud computing is, when and why...

Your Ruby on Rails application is sick. It's got bugs. Nobody remembers what that tricky piece of code was supposed to do, and nobody can tell what it actually does. Deadlines are looming, but every time you make the slightest change to the code, something else breaks.

You need Test-Driven Development (TDD), a...