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)