You don't need this for numbers over 900 right? On Thu, Nov 13, 2014 at 9:19 PM, Robert Levy <r.p.l...@gmail.com> wrote:
> (defmacro altsum [n] `(-> 0 ~@(map list (cycle [+ -]) (range 1 n)))) > > On Thu, Nov 13, 2014 at 9:02 PM, Andy L <core.as...@gmail.com> wrote: > >> (reduce + (map * (mapcat (fn[_] [1 -1]) (repeat nil)) (range 1 n))) >> >> not the best pattern for this case, but possibly useful to generate >> alternated values ... >> >> A. >> >> -- >> 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 >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > > -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
