...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
If
T
has a nested type cancellation_slot_type
, returns
t.get_cancellation_slot()
. Otherwise returns s
.
static type get( const T & t, const CancellationSlot & s = CancellationSlot());