--- Dir.foreach(path) {|file| ...}

    pathΥǥ쥯ȥǤФƷ֤ƥ졼
    Υ᥽åɤϰʲƱƯ򤷤ޤ

      dir = Dir.open(path)
      begin
        dir.each {|file|
           ...
        }
      ensure
        dir.close
      end

    nil ֤ޤ

