Sean,

> I'm sure this has been discussed to death but I can't figure it out.
>
> I've got a file-seq sequence from
> (file-seq (java.io.File. "/DirectoryWithMillionsOfFiles/")) that will cause
> an out of memory error if realized.
>
> I want to call a function such as println on every element in the sequence.
>
> I understand that naming the sequence will cause it to be realized.

The problem is not in "realizing" the sequence, but in "holding on to
the head". Naming the sequence using `def` or `'let` will indeed hold
on to the head, but I don't see why loop/recur can't solve your
problem.

Something like this should work -

(loop [fs (file-seq (java.io.File. "/DirectoryWithMillionsOfFiles/"))]
  (println (first fs))
  (recur (rest fs)))

Regards,
BG

-- 
Baishampayan Ghose
b.ghose at gmail.com

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