Re: [Boost-users] Recursive variant problem

On 07/07/10 09:53, Timothy Madden wrote:

Hi

I use the following type in my application:

boost::make_recursive_variant < boost::tuple < std::basic_string<TCHAR>, // id std::basic_string<TCHAR>, // name std::basic_string<TCHAR>, // desc std::basic_string<TCHAR>, // type std::basic_string<TCHAR>, // value std::vectorboost::recursive_variant_ // childList > >::type

However when I instantiate it and I try to populate (resize) the vector (member indexed 5 in the tuple, childList) I get: 'boost::recursive_variant_' : class has no constructors from Visual Studio 2008 SP1.

It looks like the boost::recursive_variant_ type is not substituted with the type of the enclosing variant by the make_recursive_variant meta-function. Am I missing something ? Is this is bug ?

I have also tried adding some more members to the variant, with no success.

Thank you, Timothy Madden Maybe you could just use pointers to the enclosing composite, like in:

#include #include <vector> struct tuple_tree : std::tr1::tuple < float , int , std::vector

{ }; int main(void) { tuple_tree tt; std::vector&children=std::tr1::get<2>(tt); children.push_back(new tuple_tree); return std::tr1::get<1>(tt); }