The function is actually shorter without cond->: (conj (if first? args (vec args)) x)
Take care, Moe On Fri, Aug 28, 2015 at 1:59 PM, Akhil Wali <green.transis...@gmail.com> wrote: > That's pretty neat! > But then -> will be implemented using cond->, which is slightly off. > > On Friday, August 28, 2015 at 6:07:46 PM UTC+5:30, Moe Aboulkheir wrote: >> >> On Fri, Aug 28, 2015 at 12:37 PM, Akhil Wali <green.tr...@gmail.com> >> wrote: >> >>> >>> This does work, but it's a bit of whammy. >>> Anyone with suggestions for improvement? >>> >> >> I went over this quickly, though it seems to work OK: >> >> (defn threading [x first? forms] >> (reduce >> (fn [x form] >> (if (seq? form) >> (let [[op & args] form >> args (conj (cond-> args (not first?) vec) x)] >> (apply list op args)) >> (list form x))) >> x forms)) >> >> (defmacro -> [x & forms] >> (threading x true forms)) >> >> (defmacro ->> [x & forms] >> (threading x false forms)) >> >> Take care, >> Moe >> >> -- > 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.
