Lines Matching refs:is_placeholder
220 template<class T> struct is_placeholder;
226 = is_placeholder<T>::value; // C++17
2423 template<class _Tp> struct _LIBCPP_TEMPLATE_VIS is_placeholder
2428 _LIBCPP_INLINE_VAR constexpr size_t is_placeholder_v = is_placeholder<_Tp>::value;
2504 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type;
2511 0 < is_placeholder<_Ti>::value,
2512 typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type
2516 const size_t _Indx = is_placeholder<_Ti>::value - 1;
2525 is_placeholder<_Ti>::value == 0 &&
2559 typedef typename tuple_element<is_placeholder<_Ti>::value - 1,
2580 0 < is_placeholder<_Ti>::value &&
2581 is_placeholder<_Ti>::value <= tuple_size<_TupleUj>::value,