This is a nice story about how a developer sold management on a Scala solution, put it in production, and handed off the maintenance to other developers.
When you wanted to follow the advice of the Pragmatic Programmers and learn a language every year, you had to do it at home. You couldn't bring your new learning language into work.
Today it's a different. You can learn dozens of different languages and run them on top of the JVM or MS' CLR.
Also, if you're going to learn a new language, make sure it's hard enough to hurt. If you know Java, pick something very different, like Erlang or Scala. Learn to think in a new way.
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