ruby - Saying there are 0 arguments when I have 2? Trying to open a CSV file to write into -


i'm trying read csv file , codify people groups using equation. append name of group fall end of array row creates. write new file don't overwrite original file in case goes wrong.

also, loops through directory , multiple csv files.

however, when try open new file write into, it's saying this:

segmenter.rb:12:in `open': wrong number of arguments (0 1) (argumenterror)         segmenter.rb:12:in `foreach'         segmenter.rb:12:in `<main>'

here script coefficients removed. x's in coefficients array numbers in script.

require 'csv'  coefficients = [  [x, x, x, x, x, x, x, x, x, "utilitarians"], [x, x, x, x, x, x, x, x, x, "hometown school/social"], [x, x, x, x, x, x, x, x, x, "state pride"], [x, x, x, x, x, x, x, x, x, "hard-wired advocates"], [x, x, x, x, x, x, x, x, x, "game hunters"] ]  dir.foreach |current_file|      data_set = csv.read(current_file)      data_set.array.each |row|         segment_value = 0         segment_name = ""         coefficients.each |segment|             if (segment[0] *  row[1] + segment[1]*row[2] + segment[2]*row[3] + segment[3]*row[4] + segment[4]*row[5] + segment[5]*row[6] + segment[6]*row[7] + segment[7]*row[8]) > segment_value                 segment_value = segment[0] *  row[1] + segment[1]*row[2] + segment[2]*row[3] + segment[3]*row[4] + segment[4]*row[5] + segment[5]*row[6] + segment[6]*row[7] + segment[7]*row[8]                 segment_name = segment[8]             end         row << segment_name     end      csv.open("#{current_file.basename} segmented.csv", "w") |writer|         data_set.array.each |data|             writer << data         end     end      end   end

i believe problem dir.foreach, not csv.open.

you need supply directory foreach argument. that's why getting missing argument error.

try:

dir.foreach('/path/to_my/directory') |current_file|

i think open referenced in error message when dir trying find directory open in order file list foreach.


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