std::is_execution_policy
From cppreference.com
| Defined in header <execution>
|
||
| template< class T > struct is_execution_policy; |
(since C++17) | |
Checks whether T is a standard or implementation-defined execution policy type.
Provides the member constant value which is equal to true, if T is a standard execution policy type, or an implementation-defined execution policy type. Otherwise, value is equal to false.
If the program adds specializations for std::is_execution_policy or std::is_execution_policy_v, the behavior is undefined.
Contents |
[edit] Template parameters
| T | - | a type to check |
[edit] Helper template
| Defined in header <execution>
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| template< class T > constexpr bool is_execution_policy_v = std::is_execution_policy<T>::value; |
(since C++17) | |
Inherited from std::integral_constant
Member constants
| value [static] |
true if T is a standard or implementation-defined execution policy type, false otherwise (public static member constant) |
Member functions
| operator bool |
converts the object to bool, returns value (public member function) |
| operator() (C++14) |
returns value (public member function) |
Member types
| Type | Definition |
value_type
|
bool |
type
|
std::integral_constant<bool, value> |
Run this code
#include <execution> static_assert(std::is_execution_policy_v<std::execution::unsequenced_policy>); static_assert(!std::is_execution_policy_v<int>); int main() {}
[edit] See also
| (C++17)(C++17)(C++17)(C++20) |
execution policy types (class) |
| (C++17)(C++17)(C++17)(C++20) |
global execution policy objects (constant) |
