std::experimental::ranges::TaggedType
From cppreference.com
< cpp | experimental | ranges
| Defined in header <experimental/ranges/utility>
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| template< class T > concept bool TaggedType = /* implementation-defined */; |
(ranges TS) | |
The concept TaggedType<T> is satisfied if and only if T is a unary function type of the form R(A), where R is a TagSpecifier.
Such types are used with the convenience alias templates tagged_tuple and tagged_pair.
See also
| alias template for a tagged std::tuple (alias template) | |
| alias template for a tagged std::pair (alias template) | |
| tag specifiers for use with ranges::tagged (class) |