Re: [Boost-users] mpi: sending/receiving different types

Subject: Re: [Boost-users] mpi: sending/receiving different types
From: Riccardo Murri (riccardo.murri_at_[hidden])
Date: 2010-12-09 09:01:58

Hi Hicham,

On Thu, Dec 9, 2010 at 2:47 PM, Hicham Mouline <hicham_at_[hidden]> wrote:
> The bit I am missing now is my question here:
>
> Â http://lists.boost.org/boost-users/2010/12/64797.php
>
> I don't know how to assign the most derived type to the variant at creation in the sender.
> In your code snippet, you explicitly construct c, then assign it to v.
> For me, I get given const Base& and I need to store the actual type.

If all you have is a `const Base&` then slicing has already happened
and there's no way to get the original type: all you have is a base
instance.

Can't you change your code to pass around
`boost::variant<Base<Derived,...>` or some other form of discriminated
union?

Best regards,
Riccardo