Mark Triggs <mark.h.tri...@gmail.com> writes:

> Is there an idiom for what I'm doing below, or does a function already
> exist?
>
> (let [vowels (slice "abcdefghijklmnopqrstuvwxyz"
>                      0 4 8 14 20)]
>   vowels)
>   => (\a \e \i \o \u)

Here's how I would do it:

(defn extract [coll & keys]
  (map #(get coll %) keys))

or

(defn slice [coll & keys]
  (remove nil? (map #(get coll %) keys)))

--
jan

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