reduce-kv

function

since v0.0-1211

clojure.core/reduce-kv

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Details:

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See Also:

• reduce

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Source docstring:

Reduces an associative collection. f should be a function of 3
arguments. Returns the result of applying f to init, the first key
and the first value in coll, then applying f to that result and the
2nd key and value, etc. If coll contains no entries, returns init
and f is not called. Note that reduce-kv is supported on vectors,
where the keys will be the ordinals.

(defn reduce-kv
  ([f init coll]
    (if (satisfies? IKVReduce coll)
      (-kv-reduce coll f init)
      (reduce (fn [ret me]
                (f ret (-key me) (-val me)))
        init coll))))

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