There is a package lambda.r (http://cran.r-project.org/web/packages/lambda.r/index.html) for the statistical computing environment R that implements functional programming paradigms. R is not a strict functional language, though. The package author plans to publish a book on this topic, see http://cartesianfaith.com/2013/09/21/preview-of-my-book-mode...

I lost the number of the girl I phoned three weeks ago. Can you help me out?

Maybe the simple formula takes into account the buyers/sellers on LinkDAQ?

nice idea, works good