ranges::relation Concept Reference

The relation concept. More...

#include <range/v3/functional/concepts.hpp>

Concept definition

template<typename R, typename T, typename U>
concept ranges::relation = 
        predicate<R, T, T> &&
        predicate<R, U, U> &&
        predicate<R, T, U> &&
        predicate<R, U, T>

Detailed Description

The relation concept.