c++ - using std::tuple to construct a vector-based dataset refer to variadic-templates -

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i want make class template below:

template < typename... args > class vectortuple;

by example, 

vectortuple < long, double, string >

will instanced 

tuple < vector < long >, vector < double > , vector < string > >

i not familiar variadic-templates. worst method copy code < tuple > , modify it. there easy way directly use std::tuple define vectortuple.

if looking typedef variadic-templates type then,

template<typename... args> using vectortuple = std::tuple<std::vector<args>...>;

now can use like

vectortuple<long, double, std::string> obj;

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