Hey thanks Stephen and BG, and Jonas! Cool tricks I hadn't thought
of. I'm especially going to study this one; I had thought update-in
might be applicable but I wasn't sure how (still learning it).
I appreciate it!
Mike
On Oct 23, 2:10 am, Jonas wrote:
> Another way to do it
>
> (defn apply-m
Another way to do it
(defn apply-map-fn [m f & ks]
(reduce #(update-in %1 [%2] f) m ks))
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> Hey, I've got a case where I want to apply a function to *some* values
> in a map but not all. For instance:
>
> (def m { :a 1 :b 1 :c 1 :d 1 })
>
> (defn apply-map-fn [m f & ks]
> (into m (zipmap ks (map f (map #(% m) ks)
>
> (apply-map-fn m inc :a :c)
>
> => { :a 2 :b 1 :c 2 :d 1 }
>
>
On Sat, 2011-10-22 at 12:55 -0700, Mike wrote:
> (defn apply-map-fn [m f & ks]
> (into m (zipmap ks (map f (map #(% m) ks)
>
> Is there a more idiomatic way to do this? Something shorter than
> apply-map-fn I wrote? I.e. something where I don't have to use apply-
> map-fn?
I'm not sure
Hey, I've got a case where I want to apply a function to *some* values
in a map but not all. For instance:
(def m { :a 1 :b 1 :c 1 :d 1 })
(defn apply-map-fn [m f & ks]
(into m (zipmap ks (map f (map #(% m) ks)
(apply-map-fn m inc :a :c)
=> { :a 2 :b 1 :c 2 :d 1 }
Is there a more id
