Thanks!  but not entirely convinced.  At my REPL:

user> (repeatedly 10 #(do (print "f") [(rand-int 10)]))
(ff[0] f[8] f[5] f[7] f[1] f[6] f[7] f[3] f[3] [0])

user> (take 5 (apply concat (repeatedly 10 #(do (print "f") [(rand-int
10)]))))
ffff(7 1 f6 f5 8)

Only six "f"s... so doesn't that mean the (repeatedly... ) is being
evaluated lazily?

Alistair


On Jul 27, 12:43 pm, Mark Nutter <manutte...@gmail.com> wrote:
> On Mon, Jul 26, 2010 at 9:53 AM, atucker <agjf.tuc...@googlemail.com> wrote:
> > Here is my function:
> > (defn json-seq []
> >  (apply concat
> >         (map #(do (print "f") (str/split (slurp %) #"\nStatusJSONImpl"))
> >              out-files)))
>
> Try removing the "apply concat" at the front, I'm pretty sure that's
> making your sequence non-lazy.
>
> Mark

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