Hi all!
(defn mystery-function [pred coll]
(lazy-seq
(when (seq coll)
(let [[run etc] (split-with pred coll)]
(if (seq run)
(concat run (cons :foo (mystery-function pred etc)))
(cons (first coll) (mystery-function pred (rest coll))))))))
Christophe
samppi a écrit :
> Let's say I have a sequence of integers:
> (def a (3 9 1 5 102 -322 ...))
>
> Is there a function for inserting an object—let's say :foo—after
> elements that fulfill a certain predicate?
> Furthermore, I mean inserting :foo after any block of elements that
> fulfill it:
>
> (mystery-function (partial > 6) a) ; -> (3 :foo 9 1 5 :foo 102
> -322 :foo ...)
>
> Is it possible to do this without a loop?
> >
>
>
--
Professional: http://cgrand.net/ (fr)
On Clojure: http://clj-me.blogspot.com/ (en)
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