It's also worth noting that you can translate the Ruby code almost
line for line if you make use of Clojure's atoms to adopt a more
"imperative" approach. In general, it's more satisfying to find a
pure functional way to solve a problem, but while you're transitioning
from Ruby, it's not unreasonable to copy Ruby's style in localized
contexts.
For example (untested),
(defn get-acl-access-data [file]
(let [acl (split (slurp file) #"\n"),
access (atom {})]
(doseq [line acl]
(let [[avail user-string path] (split line #"\|")]
(when (not= avail "avail")
(doseq [user (split user-string #"\,")]
(swap! access update user conj path)))))
@access))
Note that this makes use of an "update" function that really should be
in the core, but isn't:
; This should be in core
(defn update [m k f & args]
(apply update-in m [k] f args))
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