Load a single-column CSV file into a Ruby array

Question

I am new to Ruby.
Below is my naive code to load a single-column CSV file into a Ruby array.

QUESTION: Is there something better?
In particular, how to not hard-code the number of items?

require 'csv'
COUNTRIES = Array.new(240)
i = 0
CSV.foreach "#{RAILS_ROOT}/config/countries.csv" do |country|
  COUNTRIES[i] = country[0]
  i = i + 1
end

Tapio Saarinen · Accepted Answer · 2011-07-22 10:19:42Z

6

Try this:

require 'csv'
countries = CSV.read("#{RAILS_ROOT}/config/countries.csv").flatten

edited Jul 22, 2011 at 10:19

answered Jul 22, 2011 at 9:22

Tapio Saarinen

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1 Comment

Michael Kohl Over a year ago

+1. If the CSV has trailing commas after the one column an extra .compact at the end will be necessary.

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