I haven't seen the use of multiple statements in the for comprehension
here, so perhaps it's nice to elaborate that this exists?
(defn filter-file [filename]
(with-open [rdr (io/reader filename)]
(set
(for [line (line-seq rdr)
word (str/split line #"\s+")
:when (<= 4 (count word) 9)]
word))))
I would believe that is one of the more evident ways of writing it. If you
would like duplicates, replace set with doall.
-- JN
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