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This article gives you a full tour of Ruby on Rails 2.0 on Leopard—starting with building a web application using the latest Rails features with Xcode 3.0, and finishing with deploying the application to a production server running Leopard Server.
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Two projects mapping the predicted real-time positions of trains. Since train operators do not disclose the actual location of a train, these services must use indirect ways to collect these data.
