Node handles
Containers » Associative
Collaboration diagram for Node handles:

## Classes

class | std::_Node_handle< _Key, _Value, _NodeAlloc >
class | std::_Node_handle< _Value, _Value, _NodeAlloc >
class | std::_Node_handle_common< _Val, _NodeAlloc >
struct | std::_Node_insert_return< _Iterator, _NodeHandle >

## Detailed Description

Since
  C++17

The associative containers (map, set, multimap and multiset) support extracting and re-inserting nodes from the container. Those operations use the container's node_handle type, which is an alias for a _Node_handle<...> type. You should always use the container's node_handle type (e.g. std::set<int>::node_handle) to refer to these types, not the non-standard internal _Node_handle names.