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std::multiset::operator=

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< cpp‎ | container‎ | multiset
 
 
 
std::multiset
Member-Funktionen
Original:
Member functions
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multiset::multiset
multiset::~multiset
multiset::operator=
multiset::get_allocator
Iteratoren
Original:
Iterators
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multiset::begin
multiset::cbegin

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

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

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

(C++11)
Kapazität
Original:
Capacity
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multiset::empty
multiset::size
multiset::max_size
Modifiers
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Modifiers
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multiset::clear
multiset::insert
multiset::emplace(C++11)
multiset::emplace_hint(C++11)
multiset::erase
multiset::swap
Lookup
Original:
Lookup
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multiset::count
multiset::find
multiset::equal_range
multiset::lower_bound
multiset::upper_bound
Beobachter
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Observers
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multiset::key_comp
multiset::value_comp
 
multiset& operator=( const multiset& other );
(1)
multiset& operator=( multiset&& other );
(2) (seit C++11)

Ersetzt den Inhalt des Containers.

1) Copy-Zuweisungsoperator. Ersetzt den Inhalt mit einer Kopie des Inhalts other .

2) move-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 .

Inhaltsverzeichnis

[Bearbeiten] Parameter

other - ein weiterer Container, die als Quelle verwendet werden

[Bearbeiten] Rückgabewert

*this

[Bearbeiten] Komplexität

1) Linear in der Größe des Behälters .

2) Constant .

[Bearbeiten] Beispiel

Der folgende Code verwendet um ein std::multiset einem anderen zuweisen:

#include <set>
#include <iostream>
 
void display_sizes(const std::multiset<int> &nums1,
                   const std::multiset<int> &nums2,
                   const std::multiset<int> &nums3)
{
    std::cout << "nums1: " << nums1.size() 
              << " nums2: " << nums2.size()
              << " nums3: " << nums3.size() << '\n';
}
 
int main()
{
    std::multiset<int> nums1 {3, 1, 4, 6, 5, 9};
    std::multiset<int> nums2; 
    std::multiset<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 multiset
(öffentliche Elementfunktion) [edit]