...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Obtain the value associated with the specified property.
template< typename Property> Property::polymorphic_query_result_type query( Property ) const;
Do not call this function directly. It is intended for use with the query
customisation
point.
For example:
execution::any_executor<execution::occupancy_t> ex = ...; size_t n = boost::asio::query(ex, execution::occupancy);