Namespace
Varianti

std::unordered_set::emplace

Da cppreference.com.

 
 
 
std :: unordered_set
Membri funzioni
Original:
Member functions
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unordered_set::unordered_set
unordered_set::~unordered_set
unordered_set::operator=
unordered_set::get_allocator
Iteratori
Original:
Iterators
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unordered_set::begin
unordered_set::cbegin
unordered_set::end
unordered_set::cend
Capacità
Original:
Capacity
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unordered_set::erase
unordered_set::size
unordered_set::max_size
Modificatori
Original:
Modifiers
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unordered_set::clear
unordered_set::insert
unordered_set::emplace
unordered_set::emplace_hint
unordered_set::erase
unordered_set::swap
Lookup
Original:
Lookup
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unordered_set::count
unordered_set::find
unordered_set::equal_range
Benna interfaccia
Original:
Bucket interface
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unordered_set::begin2
unordered_set::end2
unordered_set::bucket_count
unordered_set::max_bucket_count
unordered_set::bucket_size
unordered_set::bucket
Politica di Hash
Original:
Hash policy
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unordered_set::load_factor
unordered_set::max_load_factor
unordered_set::rehash
unordered_set::reserve
Osservatori
Original:
Observers
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unordered_set::hash_function
unordered_set::key_eq
 
template< class... Args >
std::pair<iterator,bool> emplace( Args&&... args );
(dal C++11)
Inserisce un nuovo elemento al contenitore. L'elemento è costruito sul posto, cioè non copia o operazioni di spostamento vengono eseguite. The constructor of the element is called with exactly the same arguments, as supplied to the function, forwarded with std::forward<Args>(args)....
Original:
Inserts a new element to the container. The element is constructed in-place, i.e. no copy or move operations are performed. The constructor of the element is called with exactly the same arguments, as supplied to the function, forwarded with std::forward<Args>(args)....
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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

args -
argomenti da inoltrare al costruttore dell'elemento
Original:
arguments to forward to the constructor of the element
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[modifica] Valore di ritorno

returns a pair consisting of a bool denoting whether the insertion took place and an iterator to the inserted element.

[modifica] Complessità

Amortized constant on average, worst case linear in the size of the container.

[modifica] Vedi anche

costruisce elementi in-place con un suggerimento
Original:
constructs elements in-place using a hint
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(membro pubblico funzione) [edit]
inserti di elementi
Original:
inserts elements
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(membro pubblico funzione) [edit]