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std::multimap::operator=

提供: cppreference.com
< cpp‎ | container‎ | multimap

 
 
 
std::multimap
メンバ関数
Original:
Member functions
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multimap::multimap
multimap::~multimap
multimap::operator=
multimap::get_allocator
イテレータ
Original:
Iterators
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multimap::begin
multimap::cbegin

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

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

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

(C++11)
容量
Original:
Capacity
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multimap::erase
multimap::size
multimap::max_size
修飾子
Original:
Modifiers
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multimap::clear
multimap::insert
multimap::emplace(C++11)
multimap::emplace_hint(C++11)
multimap::erase
multimap::swap
ルック
Original:
Lookup
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multimap::count
multimap::find
multimap::equal_range
multimap::lower_bound
multimap::upper_bound
オブザーバー
Original:
Observers
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multimap::key_comp
multimap::value_comp
 
multimap& operator=( const multimap& other );
(1)
multimap& operator=( multimap&& other );
(2) (C + + 11以来)
コンテナの内容を置き換え.
Original:
Replaces the contents of the container.
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1)
コピー代入演算子。 otherの内容のコピーを使って内容を置き換え.
Original:
Copy assignment operator. Replaces the contents with a copy of the contents of other.
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2)
代入演算子を移動します。ムーブセマンティクス(すなわちother内のデータは、このコンテナにotherから移動されている)を使用してotherのものと内容を置き換えます。 otherその後は有効ですが、特定されていない状態になっている.
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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目次

[編集] パラメータ

other -
ソースとして使用する別のコンテナ
Original:
another container to be used as source
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[編集] 値を返します

*this

[編集] 複雑

1)
容器の大きさに比例.
Original:
Linear in the size of the container.
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2)
定数.
Original:
Constant.
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[編集]

次のコードは、別のを割り当てることstd::multimapを使用しています
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);
}

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

[編集] も参照してください

multimapを構築します
Original:
constructs the multimap
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(パブリックメンバ関数) [edit]