Lines Matching refs:is_placeholder
219 template<class T> struct is_placeholder;
225 = is_placeholder<T>::value; // C++17
2632 template<class _Tp> struct _LIBCPP_TEMPLATE_VIS is_placeholder
2637 _LIBCPP_INLINE_VAR constexpr size_t is_placeholder_v = is_placeholder<_Tp>::value;
2713 typedef typename tuple_element<is_placeholder<_Ti>::value - 1, _Uj>::type type;
2720 0 < is_placeholder<_Ti>::value,
2721 typename __mu_return2<0 < is_placeholder<_Ti>::value, _Ti, _Uj>::type
2725 const size_t _Indx = is_placeholder<_Ti>::value - 1;
2734 is_placeholder<_Ti>::value == 0 &&
2768 typedef typename tuple_element<is_placeholder<_Ti>::value - 1,
2789 0 < is_placeholder<_Ti>::value &&
2790 is_placeholder<_Ti>::value <= tuple_size<_TupleUj>::value,