This may also be relevant. The following works:
(defn factorial [& args] (match [args] [([n] :seq)] (factorial 1 n) [([so-far 1] :seq)] so-far [([so-far n] :seq)] (factorial (* n so-far) (dec n)))) user=> (factorial 5) 120 However, changing the order of clauses stops that: (defn factorial [& args] (match [args] [([so-far 1] :seq)] so-far [([so-far n] :seq)] (factorial (* n so-far) (dec n)) [([n] :seq)] (factorial 1 n))) ;; <<== moved this down user=> (factorial 5) NullPointerException clojure.lang.Numbers.ops (Numbers.java:942) ----- Brian Marick, Artisanal Labrador Contract programming in Ruby and Clojure Occasional consulting on Agile -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
