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Template:cpp/container/node handle insert return

From cppreference.com
{{{2}}}) An object of insert_return_type with the members initialized as follows:
  • If nh is empty, inserted is false, position is end(), and node is empty.
  • Otherwise if the insertion took place, inserted is true, position points to the inserted element, and node is empty.
  • If the insertion failed, inserted is false, node has the previous value of nh, and position points to an element with a key equivalent to nh.key().
{{{3}}}) End iterator if nh was empty, iterator pointing to the inserted element if insertion took place, and iterator pointing to an element with a key equivalent to nh.key() if it failed.
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