2010/9/20 Meikel Brandmeyer <m...@kotka.de>
> Hi,
>
> Am 20.09.2010 um 18:52 schrieb John Cromartie:
>
> >> (def flip-map #(apply zipmap ((juxt vals keys) %)))
> >>
> >
> > If I was going to write flip-map it might be a tad longer, but lazy
> > and a bit clearer (IMO), with:
> >
> > (defn flip-map [m] (into {} (map (juxt second first) m)))
>
> Is there some specific reason to avoid the most straight-forward solution?
>
> user=> (defn flip-map [m] (zipmap (vals m) (keys m)))
> #'user/flip-map
> user=> (flip-map {:a 1 :b 2 :c 3 :d 4 :e 5 :f 6 :g 7 :h 8})
> {8 :h, 7 :g, 6 :f, 5 :e, 4 :d, 3 :c, 2 :b, 1 :a}
>
>
The fact that currently having vals and keys return seqs in the same order
is not guaranteed by the documentation ?
> Sincerely
> Meikel
>
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