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std::deque::operator=

Da cppreference.com.
< cpp‎ | container‎ | deque

 
 
 
std :: deque
Membri funzioni
Original:
Member functions
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deque::deque
deque::~deque
deque::operator=
deque::assign
deque::get_allocator
Elemento accesso
Original:
Element access
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deque::front
deque::back
Iteratori
Original:
Iterators
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deque::begin
deque::cbegin

(C++11)
deque::end
deque::cend

(C++11)
deque::rbegin
deque::crbegin

(C++11)
deque::rend
deque::crend

(C++11)
Capacità
Original:
Capacity
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deque::empty
deque::size
deque::max_size
deque::shrink_to_fit
Modificatori
Original:
Modifiers
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deque::clear
deque::insert
deque::emplace
deque::erase
deque::push_front
deque::emplace_front
deque::pop_front
deque::push_back
deque::emplace_back
deque::pop_back
deque::resize
deque::swap
 
deque& operator=( const deque& other );
(1)
deque& operator=( deque&& other );
(2) (dal C++11)
Sostituisce il contenuto del contenitore.
Original:
Replaces the contents of the container.
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1)
Copia operatore di assegnazione. Sostituisce il contenuto con una copia del contenuto di other.
Original:
Copy assignment operator. Replaces the contents with a copy of the contents of other.
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2)
Spostare operatore di assegnazione. Sostituisce il contenuto con quelli della other usando la semantica spostamento (cioè i dati in other viene spostato da other in questo contenitore). other è in stato valido, ma non specificato in seguito.
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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Indice

[modifica] Parametri

other -
un altro contenitore per essere utilizzato come sorgente
Original:
another container to be used as source
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[modifica] Valore di ritorno

*this

[modifica] Complessità

1)
Lineare nella dimensione del contenitore.
Original:
Linear in the size of the container.
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2)
Costante.
Original:
Constant.
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[modifica] Esempio

Il codice seguente utilizza assegnare una std::deque ad un altro:
Original:
The following code uses to assign one std::deque to another:
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#include <deque>
#include <iostream>
 
void display_sizes(const std::deque<int> &nums1,
                   const std::deque<int> &nums2,
                   const std::deque<int> &nums3)
{
    std::cout << "nums1: " << nums1.size() 
              << " nums2: " << nums2.size()
              << " nums3: " << nums3.size() << '\n';
}
 
int main()
{
    std::deque<int> nums1 {3, 1, 4, 6, 5, 9};
    std::deque<int> nums2; 
    std::deque<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

[modifica] Vedi anche

costruisce il deque
Original:
constructs the deque
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(membro pubblico funzione) [edit]
assegna valori al contenitore
Original:
assigns values to the container
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(membro pubblico funzione) [edit]