Hi all
I don't know if you have a policy regarding using features unique for c++11 ?
Also I don't know any good way of detecting the individual compilers for
whether they support and have enabled (a subset of) c++11.
However the following code appears to work with std::tuple the same way as
boost::tuple. So feel free to use it.
template <typename T0, typename... Trest> struct
type_conversion<std::tuple<T0,Trest...> >
{
public:
typedef values base_type;
private:
template<std::size_t> struct int_{}; // compile-time counter
static void from_base(base_type const & in, indicator ind,
std::tuple<T0,Trest...> & out, int_<0> )
{
in >> std::get<0>(out);
}
template<std::size_t I> static void from_base(base_type const & in,
indicator ind, std::tuple<T0,Trest...> & out, int_<I> )
{
from_base( in, ind, out, int_<I-1>() );
in >> std::get<I>(out);
}
public:
static void from_base(base_type const & in, indicator ind,
std::tuple<T0,Trest...> & out)
{
from_base( in, ind, out, int_<sizeof...(Trest)>() );
}
};
A simple usage could then be:
soci::session sql; // connection parameters
soci::rowset<std::tuple<int,std::string>> resultset = (sql.prepare <<
"select id,name from soci_test");
for ( auto& record : resultset )
{
enum{ID,NAME};
auto id = std::get<ID>(record);
auto name = std::get<NAME>(record);
std::cout << "ID: " << id << " name: " << name << std::endl;
}
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