This weekend in the Intertweets (Jan 31st Ed)

• Rich Hickey on Clojure in Clojure (here, via @superpants5000) — This is a video recorded during the first meet-up of the NYC clojure user group, in which Rich is discussing the philosophy and motives behind Clojure in Clojure. Unfortunately the video cuts off because of battery issues with the camera.

• Scala, JRuby, Groovy, Clojure: JVM-Sprachen mit Potenzial (here, via@JAXenter_News) — The readers of JAX enter magazine in Germany have voted about which JVM-based languages have most potential. The tally is Scala (31%), JRuby (26%), Groovy (19%) and Clojure (15%). The rest of the languages are far behind, the next one being Jython at 3%.
• Cool, a talk on the #clojure programming language next tuesday evening in Berlin (here, via @pholdings) — If you are near Berlin next Tuesday Feb 2nd, there is a clojure talk there in the Berlin Lispers Meetup (see link for details)
• la #clojure plugin for #intellij 9.0.1 is now available! (via @wmacgyver) — Finally!
• My latest project is on github: Rincanter: R, Clojure, Incanter in the same REPL (here, via @jolby) — From the author: “Rincanter is a clojure/incanter wrapper around the rosuda JRIEngine Java/R bridge. The hope is to allow easy access to an embedded R engine from incanter. It also offers translation between clojure/incanter datatypes and R datatypes such as R dataframe to incanter dataset.”
• Nice, there’s webmachine-esque and content-negotiation libs for compojure already (via @chrishouser) — Nice to see how the Compojure ecosystem is growing :)
• Philly’s Emerging Technologies for the Enterprise Conference just added: Case Study in Using #Clojure #AMQP #Chef #Cucumber #JRuby (here, via @jennrapp) — The talk sounds interesting. There is also a talk from Rich Hickey himself “Clojure’s Approach to State and Identity” :)
• Rewrote #clojure contrib.json again with Protocols (here, via @stuartsierra) — Good to see the new features of Clojure 1.2 being used!
• New little blog post: The Joy of Clojure, my perspective (here, via @chrishouser) — Why “The Joy of Clojure” is a different book? Because the book is not about programming in Clojure, but about Clojure the language. Just like how “On Lisp” relates to Common Lisp.
• Episode 9 is up (here, via @fulldisclojure) — Sean Devlin’s new screencast explains why the parenthesis in any lisp are such a key part of the language. For that he explores how in Clojure, code is data, and so a Clojure program is just an elaborate data structure. Use this video to convince your friends!

By the way, you can still buy the alpha e-books of  ”Clojure in Action” and “The Joy of Clojure” at a 40% discount with the code “f440″. The purchase of the alpha e-book gives you rights to own the final book, so don’t hesitate!