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std::unordered_multimap::operator=

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std :: unordered_multimap
Funções de membro
Original:
Member functions
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unordered_multimap::unordered_multimap
unordered_multimap::~unordered_multimap
unordered_multimap::operator=
unordered_multimap::get_allocator
Iteradores
Original:
Iterators
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unordered_multimap::begin
unordered_multimap::cbegin
unordered_multimap::end
unordered_multimap::cend
Capacidade
Original:
Capacity
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unordered_multimap::erase
unordered_multimap::size
unordered_multimap::max_size
Modificadores
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
Pesquisa
Original:
Lookup
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unordered_multimap::count
unordered_multimap::find
unordered_multimap::equal_range
Interface de balde
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
Política de hash
Original:
Hash policy
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unordered_multimap::load_factor
unordered_multimap::max_load_factor
unordered_multimap::rehash
unordered_multimap::reserve
Observadores
Original:
Observers
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unordered_multimap::hash_function
unordered_multimap::key_eq
 
unordered_multimap& operator=( const unordered_multimap& other );
(1) (a partir do C++ 11)
unordered_multimap& operator=( unordered_multimap&& other );
(2) (a partir do C++ 11)
Substitui o conteúdo do recipiente.
Original:
Replaces the contents of the container.
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1)
Copiar operador de atribuição. Substitui o conteúdo com uma cópia do conteúdo do other.
Original:
Copy assignment operator. Replaces the contents with a copy of the contents of other.
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2)
Mova operador de atribuição. Substitui o conteúdo com as de other usando semântica de movimento (ou seja, os dados em other é movido de other neste recipiente). other está em estado válido, mas não especificada depois.
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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Índice

[editar] Parâmetros

other -
um outro recipiente, para ser usado como fonte
Original:
another container to be used as source
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[editar] Valor de retorno

*this

[editar] Complexidade

1)
Linear no tamanho do recipiente.
Original:
Linear in the size of the container.
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2)
Constante.
Original:
Constant.
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[editar] Exemplo

O código a seguir usa para atribuir um std::unordered_multimap para outro:
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);
}

Output:

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

[editar] Veja também

constrói o unordered_multimap
Original:
constructs the unordered_multimap
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(função pública membro) [edit]