AFAIK, such a function is still not in clojure core because it's not clear
to Rich whether f should have one argument (the value), or 2 arguments (key
+ value).
Your version seems good, you can maybe improve it a little bit by using
transients (not tested):
(persistent!
(reduce (fn [m [k v]]
(assoc! m k (f v))) (transient {}) m))
HTH,
--
Laurent
2009/12/17 C. Florian Ebeling <florian.ebel...@gmail.com>
> I was just wondering how a #'map for maps could be done most
> succinctly. Came up with this:
>
> (defn mapmap
> "Map values of map m using function f."
> [f m]
> (reduce (fn [m [k v]]
> (assoc m k (f v))) {} m))
>
> But there is probably a more straightforward way. What do you use?
>
> Florian
>
> --
> Florian Ebeling
> florian.ebel...@gmail.com
>
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