std::experimental::ranges:: tagged_pair

From cppreference.com
C++
Experimental
Ranges
General utilities library
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

specifies that a type represents a tag specifier and its element type
(concept)
augument a tuple-like type with named accessors
(class template)
convenience function for creating a tagged_pair
(function template)
alias template for a tagged std::tuple
(alias template)
convenience function for creating a tagged_tuple
(function template)
tag specifiers for use with ranges::tagged
(class)
Retrieved from " https://en.cppreference.com/mwiki/index.php?title=cpp/experimental/ranges/utility/tagged_pair&oldid=105860 "