Namespace
Varianti

std::unordered_map::insert

Da cppreference.com.

 
 
 
std::unordered_map
Membri funzioni
Original:
Member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_map::unordered_map
unordered_map::~unordered_map
unordered_map::operator=
unordered_map::get_allocator
Iteratori
Original:
Iterators
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_map::begin
unordered_map::cbegin
unordered_map::end
unordered_map::cend
Capacità
Original:
Capacity
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_map::erase
unordered_map::size
unordered_map::max_size
Modificatori
Original:
Modifiers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_map::clear
unordered_map::insert
unordered_map::emplace
unordered_map::emplace_hint
unordered_map::erase
unordered_map::swap
Lookup
Original:
Lookup
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_map::count
unordered_map::find
unordered_map::equal_range
Benna interfaccia
Original:
Bucket interface
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_map::begin2
unordered_map::end2
unordered_map::bucket_count
unordered_map::max_bucket_count
unordered_map::bucket_size
unordered_map::bucket
Politica di Hash
Original:
Hash policy
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_map::load_factor
unordered_map::max_load_factor
unordered_map::rehash
unordered_map::reserve
Osservatori
Original:
Observers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
unordered_map::hash_function
unordered_map::key_eq
 
std::pair<iterator,bool> insert( const value_type& value );
(1) (dal C++11)
template <class P>
std::pair<iterator,bool> insert( P&& value );
(2) (dal C++11)
iterator insert( const_iterator hint, const value_type& value );
(3) (dal C++11)
template <class P>
iterator insert( const_iterator hint, P&& value );
(4) (dal C++11)
template< class InputIt >
void insert( InputIt first, InputIt last );
(5) (dal C++11)
void insert( std::initializer_list<value_type> ilist );
(6) (dal C++11)

Inserts element(s) to the container, if the container doesn't already contain an element with equivalent key.

1-2)
Inserti value.
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) inserts value, using hint as a non-binding suggestion to where the search should start.

5)
inserisce elementi di [first, last) gamma.
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.
6)
inserisce elementi di lista di inizializzazione 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().

Indice

[modifica] Parametri

hint -
iteratore, usato come un suggerimento di dove inserire il contenuto
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 -
elemento di valore da inserire
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 -
intervallo di elementi da inserire
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 -
inizializzatore lista per inserire i valori da
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.

[modifica] Valore di ritorno

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)
nessuno.
Original:
none.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[modifica] Complessità

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)

[modifica] Vedi anche

constructs element in-place
(membro pubblico funzione) [edit]
costruisce elementi in-place con un suggerimento
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.

(membro pubblico funzione) [edit]