...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Helper function to obtain an object's associated cancellation_slot
.
template< typename T, typename CancellationSlot> auto get_associated_cancellation_slot( const T & t, const CancellationSlot & st);
associated_cancellation_slot<T, CancellationSlot>::get(t,
st)