https://blog.wongcw.com/2019/04/22/python%e3%80%81java%e3%80%81typescript-%e5%92%8cperl-%e4%bd%9c%e8%80%85%e8%ab%87%e8%aa%9e%e8%a8%80%e8%a8%ad%e8%a8%88/