名前空間
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操作

std::forward_list::operator=

提供: cppreference.com

 
 
 
std::forward_list
メンバ関数
Original:
Member functions
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forward_list::forward_list
forward_list::~forward_list
forward_list::operator=
forward_list::assign
forward_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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forward_list::front
イテレータ
Original:
Iterators
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forward_list::before_begin
forward_list::cbefore_begin
forward_list::begin
forward_list::cbegin
forward_list::end
forward_list::cend
容量
Original:
Capacity
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forward_list::empty
forward_list::max_size
修飾子
Original:
Modifiers
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forward_list::clear
forward_list::insert_after
forward_list::emplace_after
forward_list::erase_after
forward_list::push_front
forward_list::emplace_front
forward_list::pop_front
forward_list::resize
forward_list::swap
操作
Original:
Operations
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forward_list::merge
forward_list::splice_after
forward_list::remove
forward_list::remove_if
forward_list::reverse
forward_list::unique
forward_list::sort
 
forward_list& operator=( const forward_list& other );
(1) (C + + 11以来)
forward_list& operator=( forward_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::forward_listを使用しています
Original:
The following code uses to assign one std::forward_list to another:
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#include <iterator>
#include <forward_list>
#include <iostream>
 
void display_sizes(const std::forward_list<int> &nums1,
                   const std::forward_list<int> &nums2,
                   const std::forward_list<int> &nums3)
{
    std::cout << "nums1: " << std::distance(nums1.begin(), nums1.end()) 
              << " nums2: " << std::distance(nums2.begin(), nums2.end())
              << " nums3: " << std::distance(nums3.begin(), nums3.end()) << '\n';
}
 
int main()
{
    std::forward_list<int> nums1 {3, 1, 4, 6, 5, 9};
    std::forward_list<int> nums2; 
    std::forward_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

forward_listを構築します
Original:
constructs the forward_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]