...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
impl_type( impl_type&&); » more... template< class... Args> explicit impl_type( std::false_type, Args&& ...); » more... template< class RatePolicy_, class... Args> explicit impl_type( std::true_type, RatePolicy_&& policy, Args&& ...); » more...