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 std::execution::sequenced_policy, std::execution::parallel_policy, std::execution::parallel_unsequenced_policy, or an implementation-defined execution policy type. Otherwise, value is equal to false.
The behavior of a program that adds specializations for std::is_execution_policy is undefined.
| T | - | a type to check |
Defined in header <execution> | ||
|---|---|---|
template< class T > inline constexpr bool is_execution_policy_v = std::is_execution_policy<T>::value; | (since C++17) |
| value
[static] | true if T is a standard or implementation-defined execution policy type , false otherwise (public static member constant) |
| operator bool | converts the object to bool, returns value (public member function) |
| operator()
(C++14) | returns value (public member function) |
| Type | Definition |
|---|---|
value_type | bool |
type | std::integral_constant<bool, value> |
|
(C++17)(C++17)(C++17) | execution policy types (class) |
|
(C++17)(C++17)(C++17) | global execution policy objects (constant) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/algorithm/is_execution_policy