mss wrote: > Hi folks, new to Clojure... > > Question: > > How do I rid the following functions of all the '(def STATE num)' > calls? I can not seem to work out a way to use either 'binding', or > 'let/atom' that wraps the loop & works as well... Any other comments > are always welcomed. Here's my code: > > (defn load-block ([foo] > > (def STATE 0) > (def rx (re-pattern (str "(?i)" foo "[[:space:]]*(,|$)"))) > > (loop [line (read-line)] > (when line > (when (and (not= "" (s/trim line)) ; line not empty > (not= "\t" (subs line 0 1))) ; line does not begin w/ > a tab > (if (re-find rx line) > (def STATE 1) > (def STATE 0))) > (if (= STATE 1) > (println line)) > (recur (read-line))))))
I think I've worked out a better solution (hope this post renders properly): (ns topic (require [clojure.string :as s])) (defn load-block "TOPIC database: prints associated blocks to stdout" ([tag] (let [STATE (atom 0) rx (re-pattern (str "(?i)" tag "[[:space:]]*(,|$)"))] (loop [line (read-line)] (when line (when (and (not= "" (s/trim line)) (not= "\t" (subs line 0 1))) (if (re-find rx line) (reset! STATE 1) (reset! STATE 0))) (if (= @STATE 1) (println line)) (recur (read-line))))))) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
