1#!/usr/bin/env ruby 2# frozen_string_literal: true 3 4require 'csv' 5 6def join_csv_files(output_path, input_paths) 7 return if input_paths.empty? 8 9 input_csvs = input_paths.map do |input_path| 10 CSV.read(input_path, headers: true) 11 end 12 13 CSV.open(output_path, "w", headers: input_csvs.first.headers, write_headers: true) do |output_csv| 14 input_csvs.each do |input_csv| 15 input_csv.each do |line| 16 output_csv << line 17 end 18 end 19 end 20end 21 22join_csv_files('tmp/memory_test/report.csv', Dir['tmp/memory_test/*.csv'].sort) 23