If you're gonna over engineer use a protocol :-p

On Apr 21, 1:43 pm, Michał Marczyk <michal.marc...@gmail.com> wrote:
> On 21 April 2010 19:35, Sean Devlin <francoisdev...@gmail.com> wrote:
>
> > I like that version :)
>
> :-)
>
> In this case, rotate-while could be rewritten like so:
>
> (defn rotate-with [pred s]
>   (let [[front back] (split-with pred s)]
>     (concat back front)))
>
> And to round it off with ridiculous overengineering ;-) --
>
> (defn rotate* [n-or-pred s]
>   (let [with? (ifn? n-or-pred)
>         [front back] ((if with?
>                         split-with
>                         split-at)
>                       (if with?
>                         n-or-pred
>                         (mod n-or-pred (count s)))
>                       s)]
>     (concat back front)))
>
> Sincerely,
> Michał
>
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