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std::list::operator=

提供: cppreference.com
< cpp‎ | container‎ | list

 
 
 
std::list
メンバ関数
Original:
Member functions
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list::list
list::~list
list::operator=
list::assign
list::get_allocator
要素アクセスの循環参照を解除するために使用されている
Original:
Element access
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list::front
list::back
イテレータ
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)
容量
Original:
Capacity
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list::empty
list::size
list::max_size
修飾子
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
操作
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) (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::listを使用しています
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

[編集] も参照してください

listを構築します
Original:
constructs the list
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(パブリックメンバ関数) [edit]
コンテナに値を割り当てます
Original:
assigns values to the container
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(パブリックメンバ関数) [edit]