*/
#if defined _LIBCPP_VERSION || defined _WIN32
# define TR1NS std
+# include <array>
# include <unordered_map>
# include <type_traits>
#else
# define TR1NS std::tr1
+# include <tr1/array>
# include <tr1/unordered_map>
# include <tr1/type_traits>
#endif