Namespace
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std::unordered_set::reserve

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C++
 
Contenitori libreria
 
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
 
void reserve( size_type count );
 (dal C++11)
Imposta il numero di secchi per il numero necessario per ospitare almeno elementi count senza superare il fattore di carico massimo e rimaneggiamenti del contenitore, cioè mette gli elementi in segmenti appropriati tenuto conto che il numero totale di bucket è cambiato. Chiama efficacemente rehash(std::ceil(count / max_load_factor())).
Original:
Sets the number of buckets to the number needed to accomodate at least count elements without exceeding maximum load factor and rehashes the container, i.e. puts the elements into appropriate buckets considering that total number of buckets has changed. Effectively calls rehash(std::ceil(count / max_load_factor())).
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Indice

[modifica] Parametri

count -
nuova capacità del contenitore
Original:
new capacity of the container
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[modifica] Valore di ritorno

(Nessuno)
Original:
(none)
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[modifica] Complessità

caso medio lineare nella dimensione del, quadratica caso peggiore contenitore.
Original:
average case linear in the size of the container, worst case quadratic.
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[modifica] Vedi anche

 reserves at least the specified number of buckets.
This regenerates the hash table.
(metodo pubblico) [modifica]
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