Re: [boost] New Library Proposal: dual_state

From: Jost, Andrew (Andrew_Jost_at_[hidden])
Date: 2005-07-12 23:46:47

> -----Original Message-----
> From: boost-bounces_at_[hidden] 
> [mailto:boost-bounces_at_[hidden]] On Behalf Of Fernando Cacciola
> Sent: Tuesday, July 12, 2005 1:27 AM
> To: boost_at_[hidden]
> Subject: Re: [boost] New Library Proposal: dual_state
> 
> 
> "Jost, Andrew" <Andrew_Jost_at_[hidden]> escribió en el 
> mensaje 
> news:8F7931C35114FA4F9D25E1A9299408E20276DFA7_at_SVR-ORW-EXC-06.m
> gc.mentorg.com...
> >> Boost.Optional has some interaction with (including initialization 
> >> from) boost::none, which seems to correspond to your "undef".
> >
> > Good point, but I would also like to see overloaded == and != 
> > operators using boost::none.
> >
> That is already supported.

I think this is another documentation problem.  http://www.boost.org/libs/optional/doc/optional.html shows a constructor and operator= using boost::none, but no operators == or !=.  But you are right that the functionality is supported in the library.

> 
> Fernando Cacciola
> SciSoft
> 
> 
> 
>