From: Warren Young
Date: April 30 2010 7:11am
Subject: Re: create a Null field
List-Archive: http://lists.mysql.com/plusplus/8933
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On Apr 30, 2010, at 12:54 AM, Andrej van der Zee wrote:

> Thank you for your reply. That I tried but get the following (I am =
using 3.08):
>=20
> /usr/local/include/mysql++/null.h: In member function =91void =
parsers::ip::dbdump()=92:
> /usr/local/include/mysql++/null.h:55: error: =
=91mysqlpp::null_type::operator CannotConvertNullToAnyOtherDataType() =
const [with CannotConvertNullToAnyOtherDataType =3D unsigned int]=92 is =
protected

Ah, static typing.  Gotta love it.  You'll have to do it with if/else =
instead of the alternation operator:

	if (h)
		db_host_id =3D h->_db_host_id;
	else
		db_host_id =3D mysqlpp::null;

That's *somewhat* cleaner than your current code.=