tuple, C++ (vc++) - rextester

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//Microsoft (R) C/C++ Optimizing Compiler Version 19.00.23026 for x86

#include <iostream>
#include <string>
#include <tuple>
#include <vector>

template < typename... T > using table_type = std::vector< std::tuple<T...> > ;

template < typename... T, typename... ARGS > void add_row( table_type<T...>& table, ARGS&&... args )
{ table.push_back( std::tuple<T...>( std::forward<ARGS>(args)... ) ) ; }

template < typename T, typename... U > T get( table_type<U...>& table, std::size_t pos )
{ return std::get<T>( table[pos] ) ; }

template < typename T, typename... U > const T& get( const table_type<U...>& table, std::size_t pos )
{ return std::get<T>( table[pos] ) ; }

template < std::size_t N, typename... U  >
typename std::tuple_element< N, std::tuple<U...> >::type& get( table_type<U...>& table, std::size_t pos )
{ return std::get<N>(table[pos]) ; }

template < std::size_t N, typename... U  >
const typename std::tuple_element< N, std::tuple<U...> >::type& get( const table_type<U...>& table, std::size_t pos )
{ return std::get<N>(table[pos]) ; }

int main()
{
    table_type< std::string, double, bool > table ;
    add_row( table, "hello", 2.3, true ) ;
    add_row( table, "world", -21.4, false ) ;

std::cout << get<std::string>( table, 0 ) << '\n' // hello
              << get<0>( table, 1 ) << '\n' // world
              << get<double>( table, 1 ) << '\n' // -21.4
              << std::boolalpha << get<2>( table, 0 ) // true
              << "\n--------------\n" ;

for( const auto& tup : table )
        std::cout << std::get<std::string>(tup) << ' ' << std::get<double>(tup) << ' ' << std::get<bool>(tup) << '\n' ;
}

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Compilation time: 1.33 sec, absolute running time: 0.34 sec, absolute service time: 1,71 sec