You're not capturing the output of the reduce anywhere; doseq is for
side-effects only.
If you wrapped the doseq in a "(def dictionary ...)" it would work,
but this is not recommended.
Instead, you should either use nested reductions, or produce a simple
list of tokens first (simpler):
(defn process-file [file-name]
(with-open [rdr (BufferedReader. (FileReader. file-name))]
(reduce #(assoc %1 %2 (inc (get %1 %2 1))) {}
(mapcat #(re-seq #"[a-z]+" (.toLowerCase %))
(line-seq rdr)))))
(def dictionary (process-file "src/SpellChecker.clj"))
(Untested). Or, using clojure-contrib functions:
(defn process-file [file-name]
(->> (clojure.contrib.duck-streams/read-lines file-name)
(mapcat #(re-seq #"[a-z]+" (.toLowerCase %)))
clojure.contrib.seq/frequencies))
(also untested).
Cheers, Jason
On Jan 6, 10:49 am, new2clojure <[email protected]> wrote:
> Hi,
>
> I am trying to store into a map the frequency of each [a-z]+ word in a
> file. When I run this code in the repl the resulting dictionary is
> empty. How should I adapt my code to get this functionality right?.
>
> Thank you in advance
>
> (import (java.io BufferedReader FileReader))
>
> (def dictionary {})
>
> (defn process-file [file-name]
> (with-open
> [rdr (BufferedReader. (FileReader. file-name))]
> (doseq
> [line (line-seq rdr)]
> (reduce #(assoc %1 %2 (inc (get %1 %2 1))) dictionary (re-seq
> #"[a-z]+" (.toLowerCase line))))))
>
> (process-file "src/SpellChecker.clj")
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