Try something like this:
(defn dmap [& args]
(for [[head items] args]
item in items]
[head item]))
-Per
On Thu, Oct 7, 2010 at 1:29 PM, Stefan Rohlfing
<[email protected]> wrote:
> Dear Clojure Group,
>
> Following an Enlive tutorial I wanted to implement a function 'd-map'
> that takes an arbitrary number of [:key (list of values)] parameters
> like this:
>
> (d-map [:headline ["this" "is" "me"] ]
> [:points [1 2 3] ]
> [:comments [10 20 30] ])
>
>
> and returns a collection of [:key value] vectors where each value is
> grouped with its respective key:
>
> [ [:headline "this"] [:headline "is"] [:headline "me"]
> [:points 1] [:points 2] [:points 3]
> [:comments 10] [:comments 20] [:comments 30] ]
>
>
> I could only come up with the following implementation for 'd-map'.
> Although it works it just does not 'feel' elegant of even very
> functional:
>
> (defn d-map [& kfps]
> (let [keys (map first kfps)
> fns (map second kfps)]
> (loop [keys keys fns fns res []]
> (if (seq keys)
> (recur (rest keys) (rest fns)
> (into res (map (fn [x] [(first keys) x]) (first
> fns))))
> res))))
>
> I am relatively new to Clojure and want to learn how to write
> idiomatic code. I therefore appreciate any alternative implementation
> that might help me learn some new things.
>
> Stefan
>
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