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std::pmr::polymorphic_allocator<T>::resource

std::pmr::memory_resource* resource() const;
 (since C++17)

Returns the memory resource pointer used by this polymorphic allocator.

Parameters

(none)

Return value

The memory resource pointer used by this polymorphic allocator.

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https://en.cppreference.com/w/cpp/memory/polymorphic_allocator/resource