On Dec 15, 9:05 pm, Laurent PETIT <laurent.pe...@gmail.com> wrote:
>
> The final step is to apply return-fn to the result:
> (return-fn
>   (first (remove
>                     (comp not predicate-fn)
>                     (iterate recur-fn a0)))
>

Damn, well played sir; that's much cleaner.  If I might offer one
small tweak:

(return-fn (some predicate-fn (iterate recur-fn a0)))

would seem equivalent, though I doubt I'd have got there without your
stepwise guide to change the way I was thinking about it.

Cheers,

-DTH

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