std::relation(3) C++ Standard Libary std::relation(3) NAME std::relation - std::relation Synopsis Defined in header <concepts> template< class R, class T, class U > concept relation = (1) (since C++20) std::predicate<R, T, T> && std::predicate<R, U, U> && std::predicate<R, T, U> && std::predicate<R, U, T>; The concept relation<R, T, U> specifies that R defines a binary relation over the set of expressions whose type and value category are those encoded by either T or U. http://cppreference.com 2024.06.10 std::relation(3)
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