Re: [Boost-users] [serialization][any]Do we have serializationsupport for boost::any?

From: Robert Ramey (ramey_at_[hidden])
Date: 2005-09-27 10:18:07

Vladimir Prus wrote:
> Li Lirong wrote:
>
>> Hi,
>> Do we have serialization support for boost::any? If not, how is it
>> possible to serialize boost::any?
>
> Good question. Robert, is it possible to place BOOST_CLASS_EXPORT
> inside class definition, so that I can write something like that:
>
>   class any_base {};
>   template<class T>
>   class any_value_holder : public any_base
>   {
>        .......
>        BOOST_CLASS_EXPORT(any_value_holder);
>   };
>
> and have BOOST_CLASS_EXPORT run for each instantiation of
> any_value_holder?
>
> - Volodya

This would tie the GUID "any_value_holder" to multiple types 
any_value_holder<T> so it wouldn't be unique any more.  This is another 
manifestation of the general problem of retreiving an external string from a 
typename.  type_info does this but in a non-portable way.  Of course you 
know this as you rasied this issue in the first place.

Much fame and fortune will accrue to he who creates the function

template<typename T>
char * guid()

which returns a unique char string in a platform independent way.

Good Luck

Robert Ramey