# File class/datedata.rb, line 19 def read_file begin fp = open(@file, "r") fp.each {|line| key, value = line.chomp.split(/\t/) @date_data[key] = value } fp.close rescue puts "'#{@file}' が見つかりません。" end not @date_data.empty? # データの有無(true/false)を返す end