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]

node-handle(node-handle&& nh) noexcept;
Effects: Constructs a node-handle object initializing ptr_ with nh.ptr_.
Move constructs alloc_ with nh.alloc_.
Assigns nullptr to nh.ptr_ and assigns nullopt to nh.alloc_.
node-handle& operator=(node-handle&& nh);
Preconditions: Either !alloc_, or ator_traits​::​propagate_on_container_move_assignment​::​value is true, or alloc_ == nh.alloc_.
Effects:
  • If ptr_ != nullptr, destroys the value_type subobject 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.
  • Assigns nh.ptr_ to ptr_.
  • If !alloc_ or ator_traits​::​propagate_on_container_move_assignment​::​value is true, move assigns nh.alloc_ to alloc_.
  • Assigns nullptr to nh.ptr_ and assigns nullopt to nh.alloc_.
Returns: *this.
Throws: Nothing.