19 General utilities library [utilities]

19.14 Function objects [function.objects]

19.14.8 Logical operations [logical.operations]

19.14.8.2 Class template logical_­or [logical.operations.or]

template<class T = void> struct logical_or { constexpr bool operator()(const T& x, const T& y) const; };
constexpr bool operator()(const T& x, const T& y) const;
Returns: x || y.
template<> struct logical_or<void> { template<class T, class U> constexpr auto operator()(T&& t, U&& u) const -> decltype(std::forward<T>(t) || std::forward<U>(u)); using is_transparent = unspecified; };
template<class T, class U> constexpr auto operator()(T&& t, U&& u) const -> decltype(std::forward<T>(t) || std::forward<U>(u));
Returns: std::forward<T>(t) || std::forward<U>(u).