I placed my Reverse Polish Notation (RPN) Calculator code into StackOverflow for Refactoring feedback. http://stackoverflow.com/questions/17417175/refactoring-feedback-for-reverse-polish-notation-rpn-or-postfix-notation  My biggest issue with this problem was converting the input string operators (’+’, ’-’, ’/’, ’*’) into methods I could use for mathematical calculations.   Enter the Object#send method.  The…