std::experimental::negation - cppreference.com (original) (raw)
 |
Merged into ISO C++ The functionality described on this page was merged into the mainline ISO C++ standard as of 2/2016, see std::negation (since C++17) |
|---|
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)>.
Contents
[edit] Template parameters
| B | - | any type such that the expression bool(B::value) is a valid constant expression |
|---|
[edit] Helper variable template
| template< class B > constexpr bool negation_v = negation<B>::value; | | (library fundamentals TS v2) | | ----------------------------------------------------------------------- | | ---------------------------- |
Inherited from std::integral_constant
Member constants
| | true if B has a member ::value such that !bool(B::value) is true, false otherwise (public static member constant) | | -------------------------------------------------------------------------------------------------------------------- |
Member functions
| | converts the object to bool, returns value (public member function) | | ---------------------------------------------------------------------- | | | returns value (public member function) |