A few more things:

 -  I don't know if you want to be passing the start val to reduce in this
case ([]), it's not doing anything here

 - you have the arguments to > backwards.  (> 0 2) in prefix is (0 > 2) in
infix notation, so this will always return false in your code since the
vector count will never be less than zero

 - Any reason you can't just use filter ?


On Mon, Aug 1, 2011 at 4:11 PM, Meikel Brandmeyer <m...@kotka.de> wrote:

> Hi,
>
> Am 01.08.2011 um 21:55 schrieb octopusgrabbus:
>
> > I get back a vector of vectors from clojure-csv/parse-csv. I want to
> > remove vectors from that sequence based on the out come of certain
> > tests on individual vector elements.
>
> You can't easily slice out elements from the middle of a vector. You will
> have to reconstruct the vector. Simplest is to go the sequence route.
>
> (defn filter-parsed-csv-rows
>   [all-csv-rows]
>  (vec (filter #(and (pos? (count %)) (not (cstr/blank? (nth % 5 nil))))
> all-csv-rows)))
>
> > Below, get-parsed-csv-file is called first and returns clean-csv-rows.
> > filter-parsed-csv-rows is called with clean-csv=rows, but is not
> > returning anything. I'm trying to figure out why.
>
> It's because you return nil when your predicate isn't fulfilled. You have
> to return checked-row in the else branch of the if.
>
> Hope that helps.
>
> Sincerely
> Meikel
>
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