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
If
T has a nested type allocator_type, T::allocator_type.
Otherwise Allocator.
typedef see_below type;
Header: boost/asio/associated_allocator.hpp
Convenience header: boost/asio.hpp