[Ruby] Rubyでヘッダ付きのCSVを生成する

header = ["date", "name", "count"]
csv_data = CSV.generate("", :headers => header, :write_headers => true) do |csv|
  csv << [Date.today, "data", 6]
end

require 'csv'
FILE_PATH = 'test.tsv'
HEADER    = %w[date name count].freeze
OPTIONS   = { col_sep: "\t", headers: HEADER, write_headers: true }.freeze
puts "\nStart...\n\n"
tsv_data = CSV.generate(OPTIONS) do |tsv|
  tsv << [Date.today, 'foo', 6]
  tsv << [Date.today - 1, 'bar', 2]
end
puts tsv_data
begin
  File.open(FILE_PATH, 'w') do |file|
    file.write(tsv_data)
  end
rescue SystemCallError => e
  puts %(class=[#{e.class}] message=[#{e.message}])
rescue IOError => e
  puts %(class=[#{e.class}] message=[#{e.message}])
end
puts "\nComplete! See #{FILE_PATH}.\n"