QuoteMC102 is Cuch's Monte Carlo design pattern version 1.02 Yes.But - for the record - the main design motif is loosely-coupled, cohesive components/modules using the signals mechanisms, which is not quite the same. Patterns play a small role at the moment.If anything, the design looks more like functional programming than OOP and GP since module interfaces used Boost Signals2 and Function. I do have a GOF Visitor pattern which is very useful. In a FP context it disappears and will be replaced by a line of code. Design patterns are now a relatively detailed implementation decision.The code is here Jan 09 2012 post http://www.wilmott.com/messageview.cfm? ... TARTPAGE=5