If you are trying to get the 6th row, you might use the "nth" function. It allows you to grab an element based on its index. That'd be better than tons of (next (next (next rows))) stuff.
user=> (doc nth) ------------------------- clojure.core/nth ([coll index] [coll index not-found]) Returns the value at the index. get returns nil if index out of bounds, nth throws an exception unless not-found is supplied. nth also works for strings, Java arrays, regex Matchers and Lists, and, in O(n) time, for sequences. Alex On Tue, Jun 28, 2011 at 7:42 AM, octopusgrabbus <octopusgrab...@gmail.com> wrote: > Given this test program: > > (ns test-csv > (:gen-class) > (:use clojure.contrib.command-line) > (:use clojure-csv.core)) > > (defn process-file > "Process csv file and prints first item in every row" > [file-name] > (let [data (slurp file-name) > rows (parse-csv data)] > (dorun (map #(println (first %)) rows)))) > > (defn -main [& args] > (with-command-line args > "Get csv file name" > [[file-name ".csv file name" 1]] > (println "file-name:", file-name) > (if file-name > (process-file "resultset.csv") > (process-file file-name)))) > > is it reasonable to write a recursive function that takes the lazy > sequence -- rows -- (returned from clojure-csv) and column numbers and > recurses until the appropriate column number is reached, or is it > better to build up a long series of expressions that would pull the > columns out? > > For example, I believe I can pull out the second column by specifying > (first (next rows)), but it would look pretty awful to create a long > enough expression to get the 6th column in. > > -- > 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 -- 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
