#pragma clang system_header | |
namespace std { | |
template<class T, T v> | |
struct integral_constant { | |
static constexpr T value = v; | |
typedef T value_type; | |
typedef integral_constant type; | |
constexpr operator value_type() const noexcept { return value; } | |
}; | |
template <bool B> | |
using bool_constant = integral_constant<bool, B>; | |
using true_type = bool_constant<true>; | |
using false_type = bool_constant<false>; | |
template<class T> | |
struct is_error_code_enum : false_type {}; | |
template<class T> | |
void swap(T &a, T &b); | |
} | |