std::multimap::operator=

 

C++

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Понятия (концепции)

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Контейнеры

Алгоритмы

Итераторы

Работа с числами

Ввод / вывод

Локализация

Регулярные выражения (C++11)

Атомарные примитивы (C++11)

Потоки (C++11)

 

Контейнеры

array (C++11)

vector

deque

forward_list (C++11)

list

set

multiset

map

multimap

unordered_set (C++11)

unordered_multiset (C++11)

unordered_map (C++11)

unordered_multimap (C++11)

stack

queue

priority_queue

 

std::multimap

Член функций Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

multimap::multimap

multimap::~multimap

multimap::operator=

multimap::get_allocator

Итераторы Original: Iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

multimap::begin multimap::cbegin (C++11)

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

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

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

Потенциала Original: Capacity The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

multimap::erase

multimap::size

multimap::max_size

Модификаторы Original: Modifiers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

multimap::clear

multimap::insert

multimap::emplace (C++11)

multimap::emplace_hint (C++11)

multimap::erase

multimap::swap

Поиск Original: Lookup The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

multimap::count

multimap::find

multimap::equal_range

multimap::lower_bound

multimap::upper_bound

Наблюдателей Original: Observers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

multimap::key_comp

multimap::value_comp

 

multimap& operator=( const multimap& other );	(1)
multimap& operator=( multimap&& other );	(2)	(начиная с C++11)

Заменяет содержимое контейнера.

Original:

Replaces the contents of the container.

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1)

Скопируйте оператор присваивания. Заменяет содержимое с копией содержимого other.

Original:

Copy assignment operator. Replaces the contents with a copy of the contents of other.

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2)

Переместите оператор присваивания. Заменяет содержимое с теми other использованием семантика переноса (т.е. данные в other перемещается из other в этот контейнер). other находится в силе, но неопределенное состояние после.

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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Параметры

other

-

другой контейнер, который будет использоваться в качестве источника Original: another container to be used as source The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Возвращаемое значение

*this

Сложность

1)

Линейный в размер контейнера.

Original:

Linear in the size of the container.

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2)

Постоянное.

Original:

Constant.

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Пример

Следующий код использует , чтобы присвоить один std::multimap в другую

Original:

The following code uses to assign one std::multimap to another:

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#include <map>
#include <iostream>
 
void display_sizes(const std::multimap<int, int> &nums1,
                   const std::multimap<int, int> &nums2,
                   const std::multimap<int, int> &nums3)
{
    std::cout << "nums1: " << nums1.size()
              << " nums2: " << nums2.size()
              << " nums3: " << nums3.size() << '\n';
}
 
int main()
{
    std::multimap<int, int> nums1 {{3, 1}, {4, 1}, {5, 9}};
    std::multimap<int, int> nums2;
    std::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);
}

Вывод:

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

См. также

(constructor)	строит multimap Original: constructs the multimap The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (public функция-член)