You've pretty much nailed why JRuby catches on so well. It's still not fast for ...

angelbob on Oct 12, 2011 | parent | context | favorite | on: Cringely predicts the second coming of Java

You've pretty much nailed why JRuby catches on so well. It's still not fast for a JVM language, but it's blazing for Ruby - plus you can call through to Java where you need/want it.