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std::list::operator=

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< cpp‎ | container‎ | list

 
 
 
std::list
Member-Funktionen
Original:
Member functions
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list::list
list::~list
list::operator=
list::assign
list::get_allocator
Elementzugriff zerstört
Original:
Element access
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list::front
list::back
Iteratoren
Original:
Iterators
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list::begin
list::cbegin

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

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

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

(C++11)
Kapazität
Original:
Capacity
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list::empty
list::size
list::max_size
Modifiers
Original:
Modifiers
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list::clear
list::insert
list::emplace(C++11)
list::erase
list::push_front
list::emplace_front(C++11)
list::pop_front
list::push_back
list::emplace_back(C++11)
list::pop_back
list::resize
list::swap
Operations
Original:
Operations
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list::merge
list::splice
list::remove
list::remove_if
list::reverse
list::unique
list::sort
 
list& operator=( const list& other );
(1)
list& operator=( list&& other );
(2) (seit C++11)
Ersetzt den Inhalt des Behälters .
Original:
Replaces the contents of the container.
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1)
Kopieren Zuweisungsoperator. Ersetzt den Inhalt mit einer Kopie des Inhalts other .
Original:
Copy assignment operator. Replaces the contents with a copy of the contents of other.
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2)
Bewegen Zuweisungsoperator. Ersetzt den Inhalt mit denen unter Verwendung other bewegen Semantik (dh die Daten in other aus other in diesen Behälter bewegt wird). other ist gültig, aber nicht näher Zustand danach .
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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Inhaltsverzeichnis

[Bearbeiten] Parameter

other -
ein weiterer Container, die als Quelle verwendet werden
Original:
another container to be used as source
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[Bearbeiten] Rückgabewert

*this

[Bearbeiten] Komplexität

1)
Linear in der Größe des Behälters .
Original:
Linear in the size of the container.
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2)
Constant .
Original:
Constant.
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[Bearbeiten] Beispiel

Der folgende Code verwendet um ein std::list einem anderen zuweisen:
Original:
The following code uses to assign one std::list to another:
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#include <list>
#include <iostream>
 
void display_sizes(const std::list<int> &nums1,
                   const std::list<int> &nums2,
                   const std::list<int> &nums3)
{
    std::cout << "nums1: " << nums1.size() 
              << " nums2: " << nums2.size()
              << " nums3: " << nums3.size() << '\n';
}
 
int main()
{
    std::list<int> nums1 {3, 1, 4, 6, 5, 9};
    std::list<int> nums2; 
    std::list<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

[Bearbeiten] Siehe auch

konstruiert den list
(öffentliche Elementfunktion) [edit]
weist Werte auf den Behälter
Original:
assigns values to the container
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(öffentliche Elementfunktion) [edit]