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std::unordered_set::reserve

De cppreference.com

 
 
 
std :: unordered_set
Les fonctions membres
Original:
Member functions
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unordered_set::unordered_set
unordered_set::~unordered_set
unordered_set::operator=
unordered_set::get_allocator
Les itérateurs
Original:
Iterators
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unordered_set::begin
unordered_set::cbegin
unordered_set::end
unordered_set::cend
Capacité
Original:
Capacity
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unordered_set::erase
unordered_set::size
unordered_set::max_size
Modificateurs
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
Interface seau
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
Politique de hachage
Original:
Hash policy
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unordered_set::load_factor
unordered_set::max_load_factor
unordered_set::rehash
unordered_set::reserve
Des observateurs
Original:
Observers
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unordered_set::hash_function
unordered_set::key_eq
 
void reserve( size_type count );
(depuis C++11)
Définit le nombre de seaux pour le nombre nécessaire pour accueillir les éléments count au moins sans dépasser le facteur de charge maximale et Rehash le conteneur, c'est à dire met les éléments dans des seaux appropriées compte tenu que le nombre total de godets a changé. Appelle effectivement 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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Sommaire

[modifier] Paramètres

count -
nouvelle capacité du récipient
Original:
new capacity of the container
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[modifier] Retourne la valeur

(Aucun)
Original:
(none)
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[modifier] Complexité

cas linéaire moyenne de la taille du récipient, quadratique pire des cas .
Original:
average case linear in the size of the container, worst case quadratic.
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[modifier] Voir aussi

réserves au moins le nombre spécifié de buckets.
This régénère la table de hachage .
Original:
reserves at least the specified number of buckets.
This regenerates the hash table.
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(fonction membre publique) [edit]