Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
namespace boost { template <class T> class optional ; template <class T> void swap ( optional<T>& , optional<T>& ); template <class T> struct optional_swap_should_use_default_constructor ; } // namespace boost
This header only contains declarations.