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std::unordered_set::operator=

De cppreference.com

 
 
 
std :: unordered_set
Las funciones miembro
Original:
Member functions
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unordered_set::unordered_set
unordered_set::~unordered_set
unordered_set::operator=
unordered_set::get_allocator
Los iteradores
Original:
Iterators
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unordered_set::begin
unordered_set::cbegin
unordered_set::end
unordered_set::cend
Capacidad
Original:
Capacity
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unordered_set::erase
unordered_set::size
unordered_set::max_size
Modificadores
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
Buscar
Original:
Lookup
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unordered_set::count
unordered_set::find
unordered_set::equal_range
Bucket interfaz
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
Política Hash
Original:
Hash policy
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unordered_set::load_factor
unordered_set::max_load_factor
unordered_set::rehash
unordered_set::reserve
Los observadores
Original:
Observers
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unordered_set::hash_function
unordered_set::key_eq
 
unordered_set& operator=( const unordered_set& other );
(1) (desde C++11)
unordered_set& operator=( unordered_set&& other );
(2) (desde C++11)
Reemplaza el contenido del recipiente .
Original:
Replaces the contents of the container.
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1)
Copiar el operador de asignación. Reemplaza el contenido con una copia de los contenidos de other .
Original:
Copy assignment operator. Replaces the contents with a copy of the contents of other.
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2)
Mueva operador de asignación. Reemplaza el contenido con los de other utilizando la semántica de movimiento (es decir, los datos de other se mueve de other en el envase). other está en estado válido, pero sin especificar después .
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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Contenido

[editar] Parámetros

other -
otro recipiente para ser utilizado como fuente
Original:
another container to be used as source
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[editar] Valor de retorno

*this

[editar] Complejidad

1)
Lineal en el tamaño del recipiente .
Original:
Linear in the size of the container.
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2)
Constante .
Original:
Constant.
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[editar] Ejemplo

El código siguiente se utiliza para asignar un std::unordered_set a otro:
Original:
The following code uses to assign one std::unordered_set to another:
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#include <unordered_set>
#include <iostream>
 
void display_sizes(const std::unordered_set<int> &nums1,
                   const std::unordered_set<int> &nums2,
                   const std::unordered_set<int> &nums3)
{
    std::cout << "nums1: " << nums1.size() 
              << " nums2: " << nums2.size()
              << " nums3: " << nums3.size() << '\n';
}
 
int main()
{
    std::unordered_set<int> nums1 {3, 1, 4, 6, 5, 9};
    std::unordered_set<int> nums2; 
    std::unordered_set<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] Ver también

construye el unordered_set
Original:
constructs the unordered_set
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(miembro público función) [edit]