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hyone/group-a-sequnce.clj

Created June 28, 2011 17:52
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4clojure #63 - Group a Sequence
Raw
group-a-sequnce.clj
;; hyone's solution to Group a Sequence
;; https://4clojure.com/problem/63
(fn my-group-by [pred coll]
(reduce
(fn [dict m]
(let [ret (pred m)]
(assoc dict ret (conj (or (dict ret) []) m))))
{} coll))
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