I hacked this together: (defn f [& args] (let [default-args-atom (atom {:a 1 :b 2 :c 3 :d 4}) kwds (vec (keys @default-args-atom)) kwargs (map-indexed (fn [idx arg] (if (keyword? arg) (swap! default-args-atom assoc arg (get args (inc idx))) (swap! a assoc (get kwds idx) arg))) args)] (function-that-actually-does-what-i-want-to-do (:a @default-args-atom) (:b @default-args-atom) (:c @default-args-atom) (:d @default-args-atom)))
But it seems kind of gross to me. Is there a cleaner solution? On Sunday, July 20, 2014 8:16:55 PM UTC-4, Alex Baranosky wrote: > > You can get keyword args like this: > > (defn f [& {:keys [a b c d] > :or {a 1 b 2 c 3 d 4}}] > [a b c d]) > > But you cannot also get the ability to call: > (f 5 6 7 8) > > > On Sun, Jul 20, 2014 at 4:13 PM, Sam Raker <sam....@gmail.com > <javascript:>> wrote: > >> I'm trying to write a function that takes (up to) 4 arguments. I want to >> be able to supply every argument positionally, with a keyword or as a >> default, so that >> >> (f) >> (f 1) >> (f 1 2) >> (f 1 2 3) >> (f 1 2 3 4) >> (f 1 :b 2) >> (f 1 2 :c 3) >> ... >> (f :a 1 :b 2 :c 3 :d 4) >> >> are all equivalent. In Python, I could do this by >> >> def f(a=1,b=2,c=3,d=4):... >> >> but I'm not sure how to do it in Clojure. >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clo...@googlegroups.com >> <javascript:> >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+u...@googlegroups.com <javascript:> >> 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+u...@googlegroups.com <javascript:>. >> 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.