In this clip from Sean Devlin's "Full Disclojure" series of Clojure video tutorials, you'll see how to write an inference engine with Clojure 1.1. One of the most obvious perks of using the Clojure is the user community organized around it, which make learning the language a pleasure (and a simple one at that). For more information, including detailed, step-by-step instructions, take a look.
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