The recently released JDK 7 includes the InvokeDynamic feature. Is it speeding up (and actually used by) Groovy, Scala, Clojure, JRuby, Jython, etc? [closed]

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The recently released JDK 7 includes the long waited InvokeDynamic feature. But are those dynamic languages out there using it? (I mean Groovy, Scala, JRuby, Jython, Clojure, etc)

And more important: at the end of the day we wanna know if there is a performance speedup (yeah it should)

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The short answer is invokeDynamic has limited value for Clojure, but can be a strong benefit for other JVM languages. There is a long and very interesting thread about it here.