#!/usr/bin/env ruby # -*- coding: utf-8 -*- require'csv' csv = CSV.generate("test.csv",headers: true) do |csv| csv.add_row(["written","by","csv.rb"]) end print csv # このファイル内での話。 =begin CSV.open("test.csv","a") do|test2| test2 << ["written","by","csv.rb"] end print File.read("test.csv") # csvへの書き込みはこっち。 =end