NAME¶

std::experimental::ranges::tagged - std::experimental::ranges::tagged

Synopsis¶

Defined in header <experimental/ranges/utility>
template< class Base, TagSpecifier... Tags >

requires sizeof...(Tags) <= std::tuple_size<Base>::value (ranges TS)

struct tagged;

The class template tagged augments a tuple-like class type Base, which it publicly
derives from, with a set of named accessors specified by the tag specifiers Tags....
The tags are applied in order: the i-th tag specifier in Tags... correspond to the
i-th element of the tuple.

The tag specifiers in Tags... shall be unique. Otherwise, the behavior is undefined.

It is not possible to delete an instance of tagged through a pointer to any base
other than Base.

Member functions¶

constructor construct a tagged object
(public member function)
operator= assigns a tagged object
(public member function)
swap swaps the contents of two tagged objects
(public member function)

Named element accessors

For the N-th tag specifier in Tags... whose corresponding element name is name,
tagged provides accessors named name as follows:

constexpr decltype(auto) name() & { return std::get<N>(*this); }
constexpr decltype(auto) name() const & { return std::get<N>(*this); }
constexpr decltype(auto) name() && { return std::get<N>(std::move(*this)); }

Non-member functions¶

ranges::swap(ranges::tagged) specializes swap for tagged objects
(function)

Tuple-like access

obtains the size of a tagged
std::tuple_size<std::experimental::ranges::tagged> (class template
specialization)
obtains the types of the
std::tuple_element<std::experimental::ranges::tagged> elements of a tagged
(class template
specialization)

See also¶

TagSpecifier specifies that a type is a tag specifier
(concept)
tagged_pair alias template for a tagged std::pair
(alias template)
make_tagged_pair convenience function for creating a tagged_pair
(function template)
tagged_tuple alias template for a tagged std::tuple
(alias template)
make_tagged_tuple convenience function for creating a tagged_tuple
(function template)
in
in1
in2
out
out1 tag specifiers for use with ranges::tagged
out2 (class)
fun
min
max
begin
end