...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Move construct from a different cancellation slot wrapper type, but specify a different cancellation slot.
template< typename U, typename OtherCancellationSlot> cancellation_slot_binder( const cancellation_slot_type & s, cancellation_slot_binder< U, OtherCancellationSlot > && other);