It was not emphasized in the article, but the quotes can be both single and double. That said, it's futile to try to write universal CSV parser. If you need to

It was not emphasized in the article, but the quotes can be both single and double. That said, it's futile to try to write universal CSV parser. If you need to write your own, just make it possible to choose delimiter and type of quotes and call it a day. LibreOffice Calc does same.