1.2 KiB
1.2 KiB
[logical.operations.not]
22 General utilities library [utilities]
22.10 Function objects [function.objects]
22.10.10 Logical operations [logical.operations]
22.10.10.4 Class template logical_not [logical.operations.not]
template<class T = void> struct logical_not { constexpr bool operator()(const T& x) const; };
constexpr bool operator()(const T& x) const;
Returns: !x.
`template<> struct logical_not { template constexpr auto operator()(T&& t) const -> decltype(!std::forward(t));
using is_transparent = unspecified; }; `
template<class T> constexpr auto operator()(T&& t) const -> decltype(!std::forward<T>(t));
Returns: !std::forward(t).