Distributing and merging hash-map elements in Clojure -


what quickest way transform collection :

[[{:a 1} {:a 2} {:a 3}] [{:b 4} {:b 5} {:b 6}] [{:c 7} {:c 8} {:c 9}]]

into collection? :

[{:a 1, :b 4, :c 7} {:a 2, :b 5, :c 8} {:a 3, :b 6, :c 9}]

i've come still feel shorter :

(map (partial apply merge)       (apply map vector collection))

note numbers randomly picked, show content of each val unique...

(def data [[{:a 1} {:a 2} {:a 3}] [{:b 4} {:b 5} {:b 6}] [{:c 7} {:c 8} {:c 9}]])  (apply mapv merge data) ;=> [{:a 1, :c 7, :b 4} {:a 2, :c 8, :b 5} {:a 3, :c 9, :b 6}]

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