[container.node.cons] (original) (raw)

23 Containers library [containers]

23.2 Requirements [container.requirements]

23.2.5 Node handles [container.node]

23.2.5.2 Constructors, copy, and assignment [container.node.cons]

constexpr _node-handle_(_node-handle_&& nh) noexcept;

Effects: Constructs a node-handle object initializingptr_ with nh.ptr_.

Move constructs alloc_ withnh.alloc_.

Assigns nullptr to nh.ptr_ and assignsnullopt to nh.alloc_.

constexpr _node-handle_& operator=(_node-handle_&& nh);

Preconditions: Either !alloc_, orator_traits​::​propagate_on_container_move_assignment​::​valueis true, or alloc_ == nh.alloc_.

Effects:

• If ptr_ != nullptr, destroys the value_typesubobject in the container_node_type object pointed to by ptr_by calling ator_traits​::​destroy, then deallocates ptr_ by calling ator_traits​::​template rebind_traits<container_node_type>​::​deallocate.
• If !alloc_ or ator_traits​::​propagate_on_container_move_assignment​::​valueis true, move assigns nh.alloc_ to alloc_.
• Assignsnullptr to nh.ptr_ and assigns nullopt tonh.alloc_.