Re: [boost] optional vs variant vs any

From: David Abrahams (david.abrahams_at_[hidden])
Date: 2001-08-30 01:56:24

----- Original Message -----
From: "Vesa Karvonen" <vesa.karvonen_at_[hidden]>

> >
> > Alignment & exception safety are somewhat at odds.
>                                                    ^ with each other?
> Could you elaborate?
>
> > For instance, if I have a
> > variants a and b and I want to swap them, it is tough (maybe
impossible?) to
> > do this in an exception-safe manner for pathological types.

What you're referring to isn't "exception-unsafe", unless these types are so
pathological as to have unsafe copy constructor and assignment. I think you
mean that swap will give only the basic guarantee for some types.

-Dave