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+---
+
+title: RPN macro setup
+
+date: 2016-04-05
+
+layout: post
+
+lang: en
+
+ref: rpn-macro-setup
+
+---
+
+```lisp
+(defmacro rpn (body)
+  (rpn-expander body))
+
+(defun rpn-expander (body)
+  (mapcar (lambda (x)
+                (if (listp x)
+                    (rpn-expander x)
+                    x))
+          (reverse body)))
+
+(rpn ((2 1 +) 2 *))
+; => 6
+
+#|
+Just a quick stub.
+
+One could easily improve #'RPN-EXPANDER in order to better suit one's needs.
+|#
+```