std::tuple_size<std::experimental::ranges::tagged>

template< class Base, class... Tags >

struct tuple_size<std::experimental::ranges::tagged<Base, Tags...>>

    : std::tuple_size<Base> {};
 (ranges TS)

The partial specialization of std::tuple_size for tagged provides the ability to obtain the number of elements in a tagged object using tuple-like syntax. It simply forwards to std::tuple_size<Base>.

Inherited from std::integral_constant

Member constants

value
[static]
 std::tuple_size<Base>::value
(public static member constant)

Member functions

operator std::size_t
 converts the object to std::size_t, returns value
(public member function)
operator()
(C++14)
 returns value
(public member function)

Member types

Type Definition
value_type std::size_t
type std::integral_constant<std::size_t, value>

See also

(C++11)
 obtains the size of tuple at compile time
(class template specialization)
(C++11)
 obtains the size of an array
(class template specialization)
(C++11)
 obtains the size of a pair
(class template specialization)
obtains the types of the elements of a tagged
(class template specialization)