std::forward_list::operator=

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C++
 
容器库
 
std::forward_list
成员函数
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
元素的访问
Original:
Element access
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forward_list::front
迭代器
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
修饰符
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 起）
forward_list& operator=( forward_list&& other );
 (2) （C++11 起）
替换该容器的内容.
Original:
Replaces the contents of the container.
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1)
复制赋值操作者。与other的内容的副本的内容替换.
Original:
Copy assignment operator. Replaces the contents with a copy of the contents of other.
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2)
将赋值运算符。的other使用移动语义（即移动中的数据otherother到这个容器中）的内容替换。 other是有效的，但是未指定状态之后.
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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目录

[编辑] 参数

other -
另一个容器被用作源
Original:
another container to be used as source
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[编辑] 返回值

*this

[编辑] 复杂性

1)
在所述容器的大小线性.
Original:
Linear in the size of the container.
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2)
恒定
Original:
Constant.
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[编辑] 为例

下面的代码使用：分配一个std::forward_list：
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

[编辑] 另请参阅
构建forward_list
Original:
constructs the forward_list
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（公共成员函数） [edit]
将值分配到容器中
Original:
assigns values to the container
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（公共成员函数） [edit]
来自“http://zh.cppreference.com/mwiki/index.php?title=cpp/container/forward_list/operator%3D&oldid=28512”