std::uses_allocator<std::dynarray>

From cppreference.com
< cpp‎ | container‎ | dynarray
template< class T, class Alloc >
struct uses_allocator<dynarray<T>, Alloc> : std::true_type;
(since C++14)

Provides a specialization of the std::uses_allocator type trait for std::dynarray. A dynarray may be constructed with an allocator, even though the class does not have allocator_type member type.

[edit] See also

checks if the specified type supports uses-allocator construction
(class template)