NAME¶

std::experimental::negation - std::experimental::negation

Synopsis¶

Defined in header <experimental/type_traits>
template< class B > (1) (library fundamentals TS v2)
struct negation;

Forms the logical negation of the type trait B.

The type negation<B> is a UnaryTypeTrait with a base characteristic of
std::integral_constant<bool, !bool(B::value)>.

Template parameters¶

B - any type such that the expression bool(B::value) is a valid constant expression

Helper variable template

template< class B > (library fundamentals TS v2)
constexpr bool negation_v = negation<B>::value;

Inherited from std::integral_constant

Member constants¶

value true if B has a member ::value such that !bool(B::value) is true, false
[static] otherwise
(public static member constant)

Member functions¶

operator bool converts the object to bool, returns value
(public member function)
operator() returns value
(C++14) (public member function)

Member types¶

Type Definition
value_type bool
type std::integral_constant<bool, value>

Possible implementation¶

template<class B>
struct negation : std::integral_constant<bool, !bool(B::value)> {};

Example¶

This section is incomplete
Reason: no example

See also¶

negation logical NOT metafunction
(C++17) (class template)

Category:¶

* Todo no example