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view src/rlm/dylan-reverse-seq.clj @ 0:78a630e650d2

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initial import
author Robert McIntyre <rlm@mit.edu>
date Tue, 18 Oct 2011 00:57:08 -0700
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     1 (ns coderloop.reverse-sequence)



     2 (use 'clojure.contrib.str-utils)



     3 ;;(use 'rlm.shell-inspect)



     4 



     5 (defn extension[f ip op] (fn[x](if (= x ip) op (f x))))



     6 



     7 (let[



     8      ;;*command-line-args* (list "/home/ocsenave/testfile.txt")



     9      pairs (if (nil? *command-line-args*) '()  (map #(re-split #" " %) (re-split #"\r\n" (slurp(first *command-line-args*)))))



    10      predecessor (reduce #(extension %1 (second %2)(first %2)) (fn[x]nil) pairs)



    11      terminus (first(remove(set(map first pairs))(map second pairs)))



    12      ]



    13   (defn lineage[x](if(nil? x)nil (cons x(lineage (predecessor x)))))



    14   (print (str-join "\n" (lineage terminus)))



    15   )



    16 



    17 



    18 ;;(if (command-line?)



    19 ;;  (do-something-to *command-line-args*))



    20