Re: [boost] [variant] Warning: variadic templates in boost::variant

10 Dec 2013

      On 12/10/13 15:35, Larry Evans wrote:
[snip]
...
Hi Matt,
I'm trying to understand how you arrive at the static_visitor.  Since
the set of bounded types in the variant is a result of
metaprogramming, I'm guessing that the static_visitor would also have
to be the result of some metaprogramming.  Otherwise I can't figure
out how it could be done.  I'm guessing that you use some sort of
inheritance for each bounded type.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Should be:

   inheritance for the operator() member function
   for each bounded type.

IOW.

template
class my_visitor
: public my_visitor
{
public:
     int operator()(Head&) const
     ;
};

template<>
class my_visitor
: public static_visitor<int>
{
};
...
Is that right?
-regards,
Larry
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