std::experimental::ranges::Regular
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Defined in header
<experimental/ranges/concepts>
template< class T >
concept bool Regular = Semiregular<T> && EqualityComparable<T>;
(ranges TS)
concept bool Regular = Semiregular<T> && EqualityComparable<T>;
The Regular concept specifies that a type is regular, that is, it is copyable, default constructible, and equality comparable. It is satisfied by types that behave similarly to built-in types like int, and that are comparable with ==.