Re: [Boost-users] [any] Is it possible to support polymorphism in boost::any?

Subject: Re: [Boost-users] [any] Is it possible to support polymorphism in boost::any?
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-09-06 15:05:22

AMDG

Tang Jiang Jun wrote:
> After thinking deeper, I figure out a rough implementation for this idea,
> and prove it can work with polymorphism. (It is just rough concept
> verification, and need a lot of work to polish it and make it usable).
>   

A more automated way would be to use
multiple inheritance and cross cast.

class any_impl_base {
public:
    virtual ~any_impl_base() {}
};

template<class T, bool is_class = boost::is_class<T>::value>
class any_impl : public T, public any_impl_base {};

In Christ,
Steven Watanabe