If you're not worried about order, you could also write:

    (reduce (fn [m [k v]] (update-in m [k] conj v)) {} values)

- James


On 6 February 2014 00:40, Paul Mooser <[email protected]> wrote:

> This is very similar to Sean's solution, but all values will be vectors:
>
> (reduce
>  (fn [acc [k v]]
>    (update-in acc [k]
>               #(conj (or %1 []) v))) {}
>               [[:a 123] [:b 124] [:a 125] [:c 126] [:b 127] [:a 100]])
>
>
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