On Sat May 08 2010 at 08:38 am, Mark J. Reed wrote:
> But there are no doubt better ways to do it, probably built in or in
> clojure.core.
Using 'split-with' from core seems handy here:
clojure.core/split-with
([pred coll])
Returns a vector of [(take-while pred coll) (drop-while pred coll)]
So here's another option:
(defn replace-first [a b coll]
(let [[head tail] (split-with #(not= a %) coll)]
(concat head (when (seq tail)
(cons b (rest tail))))))
-Jeff
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