On Aug 19, 5:16 pm, Sean Devlin <[email protected]> wrote:
> However, over time I found this signature did not work well with my
> code. Often I would write something like this
>
> (map (comp (partial map (comp #(str2/drop % 2)
> #(str2/take % 5)))
> #(str2/split % #"\t"))
> (split a-string #"[\n\r]"))
>
> This felt a little forced, and the methods don't compose very well.
On the other hand, here's another way of writing the above, using ->
with some added helpers:
(defn each [coll f]
(map f coll))
(defmacro each-> [coll & body]
`(each ~coll (fn [x#] (-> x# ~...@body))))
(-> a-string
(str2/split #"[\n\r]")
(each-> (str2/split #"\t")
(each-> (str2/take 5)
(str2/drop 2))))
-SS
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