std::is_execution_policy
Min standard notice:
Header: <execution>
Checks whether T is a standard or implementation-defined execution policy type.
# Declarations
template< class T >
struct is_execution_policy;
(since C++17)
Header: <execution>
Checks whether T is a standard or implementation-defined execution policy type.
template< class T >
struct is_execution_policy;
(since C++17)