std::unordered_map::insert – cppreference.com

Aus cppreference.com


`std::pair<iterator,bool> insert( const value_type& value );`	(1)	(seit C++11)

`template <class P> std::pair<iterator,bool> insert( P&& value );`	(2)	(seit C++11)

`iterator insert( const_iterator hint, const value_type& value );`	(3)	(seit C++11)

`template <class P> iterator insert( const_iterator hint, P&& value );`	(4)	(seit C++11)

`template< class InputIt > void insert( InputIt first, InputIt last );`	(5)	(seit C++11)

`void insert( std::initializer_list<value_type> ilist );`	(6)	(seit C++11)

Fügt Element(e) in den Container ein, falls noch kein Element mit gleichem Schlüssel im Container existiert.

1-2)

Elemet einfügen.

Original:

inserts value.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

3-4) Fügt ein Element ein, benutzt dabei den nicht bindenden Hint als Startpunkt für die Suche.

Einsätze Elemente aus Bereich [first, last) .

Original:

inserts elements from range [first, last).

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Einsätze Elemente aus Initialisierungsliste ilist .

Original:

inserts elements from initializer list ilist.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

If rehashing occurs due to the insertion, all iterators are invalidated. Otherwise iterators are not affected. References are not invalidated. Rehashing occurs only if the new number of elements is higher than max_load_factor()*bucket_count().

Parameter

hint	-	Iterator, als Anregung, wo den Inhalt einfügen verwendet Original: iterator, used as a suggestion as to where to insert the content The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
value	-	Wert des Elements einfügen Original: element value to insert The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
first, last	-	Bereich von Elementen einzufügen Original: range of elements to insert The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ilist	-	Initialisierungsliste um die Werte aus einzufügen Original: initializer list to insert the values from The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Type requirements
-`InputIt` must meet the requirements of `InputIterator`.

Rückgabewert

1-2) returns a pair consisting of an iterator to the inserted element (or to the element that prevented the insertion) and a bool denoting whether the insertion took place.

3-4) returns an iterator to the inserted element, or to the element that prevented the insertion.

5-6)

keine .

Original:

none.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Komplexität

1-4) Average case: O(1), worst case O(size())

5-6) Average case: O(N), where N is the number of elements to insert. Worse case: O(N*size()+N)

Siehe auch


	constructs element in-place (öffentliche Elementfunktion) [edit]

	baut Elemente in-place mit einem Hinweis Original: constructs elements in-place using a hint The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (öffentliche Elementfunktion) [edit]