Hello group.
I wrote a tiny macro to apply a function to values in lowest levels in a map
with arguments.
Three questions:
- Does this abstraction have any existing name?
- Is there any existing function/macro to do similar things?
- Would anyone improve this implementation?
(require '[clojure.test :refer (with-test is are run-tests)])
(with-test
(defmacro mapf [f m & args]
`((fn f# [n#]
(if (map? n#)
(into {} (map (fn [[k# v#]] [k# (f# v#)]) n#))
(~f n# ~@args)))
~m))
(is (= (mapf #(* % %) {:a {:b 3 :c 4} :d 5})
{:a {:b 9 :c 16} :d 25}))
(is (= (mapf #(+ (* %1 %1) %2) {:a {:b 3 :c 4} :d 5} 1)
{:a {:b 10 :c 17} :d 26})))
https://gist.github.com/kohyama/6089899
Thank you in advance.
Y.Kohyama
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