On 21 April 2010 17:46, Sean Devlin <[email protected]> wrote:
> I think the lazy-cat version looses the ability to rotate in reverse,
> which I've come to love from Ruby. Also, I have found use cases where
> I want to rotate a period longer than the sequence length.
Right. I don't mind rotate being strict, actually, I'm just playing
around and being silly:
(defn rotate [n s]
(if-let [remaining (and (not (neg? n))
(seq (drop n s)))]
(lazy-cat remaining
(take n s))
(let [c (count s)]
(take c (drop (mod n c) (cycle s))))))
Seriously though, I'd vote for your original versions to go into c.c.seq.
Sincerely,
Michał
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