...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Helper function to obtain an object's associated allocator.
template< typename T, typename Allocator> auto get_associated_allocator( const T & t, const Allocator & a);
associated_allocator<T, Allocator>::get(t,
a)