Re: [Boost-users] Getting Environment Variables

From: Sebastian Redl (sebastian.redl_at_[hidden])
Date: 2006-01-19 22:55:43

Merrill Cornish wrote:

>Sebastian,
>
>boost::nothing sounds interesting, but I've never run across it before.
>Where is it defined?
>  
>
It's a wrong memory on my part. The Boost.Optional library defines 
boost::none, which is a global instance of boost::none_t. Any 
optional<T> can be instantiated from a none_t; the resulting object will 
be empty.

http://www.boost.org/libs/optional/doc/optional.html -> Look for the 
constructor optional<T>::optional( none_t )

Sebastian