26 Containers library [containers]

26.2 Container requirements [container.requirements]

26.2.4 Node handles [container.node]

26.2.4.5 node_­handle modifiers [container.node.modifiers]

void swap(node_handle& nh) noexcept(ator_traits::propagate_on_container_swap::value || ator_traits::is_always_equal::value);

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Requires: !alloc_­, or !nh.alloc_­, or ator_­traits​::​propagate_­on_­container_­swap is true, or alloc_­ == nh.alloc_­.

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Effects: Calls swap(ptr_­, nh.ptr_­). If !alloc_­, or !nh.alloc_­, or ator_­traits​::​propagate_­on_­container_­swap is true calls swap(alloc_­, nh.alloc_­).