std::experimental::ranges::tagged_pair

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swap	exchange
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invoke identity	equal_to not_equal_to	greater less	greater_equal less_equal
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is_swappable_withis_swappable	is_nothrow_swappable_withis_nothrow_swappable	common_reference common_type
Tagged pairs and tuples
TagSpecifier TaggedType	tagged tag specifiers	tagged_pair make_tagged_pair	tagged_tuple make_tagged_tuple

Defined in header <experimental/ranges/utility>
template< TaggedType T1, TaggedType T2 > using tagged_pair = /* see below */;		(ranges TS)

Convenience alias template for naming a ranges::tagged wrapping a std::pair.

A TaggedType is a function type S(T), where S is a TagSpecifier and T is the type of the element.

tagged_pair<S1(T1), S2(T2)> is an alias for ranges::tagged<std::pair<T1, T2>, S1, S2>.

Notes

Because a function type is used to "glue" the tag specifier and the corresponding element type together, the usual parameter type adjustments apply. In particular, top-level cv-qualifiers are removed and array types are adjusted to pointers: tagged_pair<tag::in(const int* const), tag::out(int[])> is ranges::tagged<std::pair<const int*, int*>, tag::in, tag::out>.

See also

TaggedType	specifies that a type represents a tag specifier and its element type (concept)
tagged	augument a tuple-like type with named accessors (class 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)
inin1in2outout1out2funminmaxbeginend	tag specifiers for use with ranges::tagged (class)