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From: Joel de Guzman (joel_at_[hidden])
Date: 2004-06-24 21:55:52

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Previous message: Joel de Guzman: "Re: [Boost-users] Spirit 1.6 with VC6"
In reply to: Erik Thiele: "[Boost-users] a template to extend types to support something like SQL NULL"

Erik Thiele wrote:

> hi
>
> i have an int. but it should also support a "undefined" state like SQL
> NULL. most times i can use -1 for this. but there are also data types
> without a reasonable undefined value. maybe float or double. or maybe -1
> is perfectly legal.

Have you considered boost.optional?

Regards,

-- 
Joel de Guzman
http://www.boost-consulting.com
http://spirit.sf.net

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In reply to: Erik Thiele: "[Boost-users] a template to extend types to support something like SQL NULL"

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