Sprout/sprout/string/tuple.hpp
2012-05-14 15:42:54 +09:00

29 lines
708 B
C++

#ifndef SPROUT_STRING_TUPLE_HPP
#define SPROUT_STRING_TUPLE_HPP
#include <cstddef>
#include <tuple>
#include <type_traits>
#include <sprout/string/string.hpp>
namespace std {
//
// tuple_size
//
template<typename T, std::size_t N, typename Traits>
class tuple_size<sprout::basic_string<T, N, Traits> >
: public std::integral_constant<std::size_t, N>
{};
//
// tuple_element
//
template<std::size_t I, typename T, std::size_t N, typename Traits>
class tuple_element<I, sprout::basic_string<T, N, Traits> > {
public:
static_assert(I < N, "tuple_element<>: index out of range");
typedef T type;
};
} // namespace std
#endif // #ifndef SPROUT_STRING_TUPLE_HPP