thanks- you are correct. it is -what it is! -doug
On Aug 1, 1:03 pm, Rasmus Svensson <r...@lysator.liu.se> wrote:
> 2010/8/1 doug <395curra...@gmail.com>
>
>
>
>
>
> > Hey all!
>
> > can't seem to get the last element to bind. tia -doug
>
> > user> cj-mpdata
> > ["0010335602 " "" "40.00" "" "1060.51" "6/23/2010" "DISCOVER E-
> > PAYMENT 7796" "" "" ("DISCOVER")]
> > user> (let [[[_ ck db cr _ dt _ _ _][dsc]]
> > [["Acct" "Chk" "Debt" "Crd" "Bal" "Date" "Desc" "Payee"
> > "Catagory"]
> > ["newDescript"]]]
> > [dt ck db cr dsc])
> > ["Date" "Chk" "Debt" "Crd" "newDescript"]
> > user> (let [[[_ ck db cr _ dt _ _ _][dsc]] [cj-mpdata]]
> > [dt ck db cr dsc])
>
> > ["6/23/2010" "" "40.00" "" nil]
> > user>
>
> The data you pass to the first let is structured like this:
> [[:a :b :c :d :e :f :g :h :i] [:j]]
> i.e., a 2-vector with a 9-vector and a 1-vector in it.
>
> But the data in cj-mpdata is structured like this:
> [:a :b :c :d :e :f :g :h :i [:j]]
> i.e., a 10-vector with a 1-vector as its last element.
>
> In your second let case, doing this should work:
> (let [[_ ck db cr _ dt _ _ _ [dsc]] cj-data]
> [dt ck db cr dsc])
>
> Also, adding square brackets to both the left hand side and the right and
> side in a let binding is a no-op, and can be removed.
>
> // raek
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