Re: [boost] [optional] Reference assignment

From: Brian McNamara (lorgon_at_[hidden])
Date: 2003-10-31 02:10:08

On Fri, Oct 31, 2003 at 01:26:28PM +0800, Joel de Guzman wrote:
> Brian McNamara <lorgon_at_[hidden]> wrote:
> > Why doesn't this:
> > 
> >    template <class T>
> >    class match {
> >       optional<T> data;
> >       ...
> >    public:
> >       match( T x ) : data(x) {}
> >       ...
> >       void value( T y ) {
> >          *data = y;
> >       }
> >    };
> > 
> > do what you want?  If T is a reference type, the match's constructor
> > puts the reference in the optional, and then calls to value() change the
> > value of the referred-to object.  If T is a non-reference type, it also
> > works, as far as I can tell.
> > 
> > I am clearly missing something, but I don't know what.  :)
> 
> Oh yes, you can always coerce an API to have it your way <wink ;>

So does my code above work for you?  If not, can you show me the problem?  
I'm still confused what the issue is here.

-- 
-Brian McNamara (lorgon_at_[hidden])