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std::unordered_multimap::operator=

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std :: unordered_multimap
Les fonctions membres
Original:
Member functions
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unordered_multimap::unordered_multimap
unordered_multimap::~unordered_multimap
unordered_multimap::operator=
unordered_multimap::get_allocator
Les itérateurs
Original:
Iterators
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unordered_multimap::begin
unordered_multimap::cbegin
unordered_multimap::end
unordered_multimap::cend
Capacité
Original:
Capacity
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unordered_multimap::erase
unordered_multimap::size
unordered_multimap::max_size
Modificateurs
Original:
Modifiers
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unordered_multimap::clear
unordered_multimap::insert
unordered_multimap::emplace
unordered_multimap::emplace_hint
unordered_multimap::erase
unordered_multimap::swap
Lookup
Original:
Lookup
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unordered_multimap::count
unordered_multimap::find
unordered_multimap::equal_range
Interface seau
Original:
Bucket interface
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unordered_multimap::begin2
unordered_multimap::end2
unordered_multimap::bucket_count
unordered_multimap::max_bucket_count
unordered_multimap::bucket_size
unordered_multimap::bucket
Politique de hachage
Original:
Hash policy
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unordered_multimap::load_factor
unordered_multimap::max_load_factor
unordered_multimap::rehash
unordered_multimap::reserve
Des observateurs
Original:
Observers
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unordered_multimap::hash_function
unordered_multimap::key_eq
 
unordered_multimap& operator=( const unordered_multimap& other );
(1) (depuis C++11)
unordered_multimap& operator=( unordered_multimap&& other );
(2) (depuis C++11)
Remplace le contenu du récipient .
Original:
Replaces the contents of the container.
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1)
Copiez opérateur d'affectation. Remplace le contenu d'une copie du contenu de other .
Original:
Copy assignment operator. Replaces the contents with a copy of the contents of other.
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2)
Déplacez opérateur d'affectation. Remplace le contenu avec ceux de other en utilisant la sémantique de déplacement (c'est à dire les données dans other est déplacé d'other dans ce récipient). other est dans un état valide, mais non précisées par la suite .
Original:
Move assignment operator. Replaces the contents with those of other using move semantics (i.e. the data in other is moved from other into this container). other is in valid, but unspecified state afterwards.
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Sommaire

[modifier] Paramètres

other -
un autre récipient pour être utilisé en tant que source
Original:
another container to be used as source
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[modifier] Retourne la valeur

*this

[modifier] Complexité

1)
Linéaire à la taille du récipient .
Original:
Linear in the size of the container.
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2)
Constant .
Original:
Constant.
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[modifier] Exemple

Le code suivant utilise d'affecter un std::unordered_multimap à l'autre:
Original:
The following code uses to assign one std::unordered_multimap to another:
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#include <unordered_map>
#include <iostream>
 
void display_sizes(const std::unordered_multimap<int, int> &nums1,
                   const std::unordered_multimap<int, int> &nums2,
                   const std::unordered_multimap<int, int> &nums3)
{
    std::cout << "nums1: " << nums1.size() 
              << " nums2: " << nums2.size()
              << " nums3: " << nums3.size() << '\n';
}
 
int main()
{
    std::unordered_multimap<int, int> nums1 {{3, 1}, {4, 1}, {5, 9}};
    std::unordered_multimap<int, int> nums2;
    std::unordered_multimap<int, int> nums3;
 
    std::cout << "Initially:\n";
    display_sizes(nums1, nums2, nums3);
 
    // copy assignment copies data from nums1 to nums2
    nums2 = nums1;
 
    std::cout << "After assigment:\n"; 
    display_sizes(nums1, nums2, nums3);
 
    // move assignment moves data from nums1 to nums3,
    // modifying both nums1 and nums3
    nums3 = std::move(nums1);
 
    std::cout << "After move assigment:\n"; 
    display_sizes(nums1, nums2, nums3);
}

Résultat :

Initially:
nums1: 4 nums2: 0 nums3: 0
After assigment:
nums1: 4 nums2: 4 nums3: 0
After move assigment:
nums1: 0 nums2: 4 nums3: 4

[modifier] Voir aussi

Construit le unordered_multimap
(fonction membre publique) [edit]