On Sat, Jul 24, 2010 at 9:07 AM, Gary Fredericks <fredericksg...@gmail.com> wrote: > (defn remove-first > [syb lst] > (let [[before after] > (loop [b [] a lst] > (if (empty? lst) > [b a] > (if (= syb (first a)) > [b (rest a)] > (recur (cons (first a) b) (rest a)))))] > (concat (reverse before) after))) > > user=> (remove-first 4 '(1 5 3 4 2 6 674 4 2)) > (1 5 3 2 6 674 4 2) > > I'm interested if somebody comes up with something more efficient, i.e. that > doesn't require the reversal.
If you change (cons (first a) b) to (conj b (first a), then no reversal will be required. -- 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
