template <class T, T v> | |
struct integral_constant { | |
static constexpr T value = v; | |
typedef T value_type; | |
typedef integral_constant type; // using injected-class-name | |
constexpr operator value_type() const noexcept { return value; } | |
}; | |
using false_type = integral_constant<bool, false>; | |
using true_type = integral_constant<bool, true>; | |
template <class T, class U> | |
struct is_same : false_type {}; | |
template <class T> | |
struct is_same<T, T> : true_type {}; |