std::front_insert_iterator<Container>::operator=

< cpp‎ | iterator‎ | front insert iterator

	(1)
front_insert_iterator<Container>& operator=( typename Container::const_reference value );			(C++11 前)
front_insert_iterator<Container>& operator=( const typename Container::value_type& value );			(C++11 起) (C++20 前)
constexpr front_insert_iterator<Container>& operator=( const typename Container::value_type& value );			(C++20 起)
		(2)
front_insert_iterator<Container>& operator=( typename Container::value_type&& value );				(C++11 起) (C++20 前)
constexpr front_insert_iterator<Container>& operator=( typename Container::value_type&& value );				(C++20 起)

插入给定的 value 到迭代器。

1) 导致 container->push_front(value)

2) 导致 container->push_front(std::move(value))

参数

value

要插入的值

返回值

*this

示例

#include <iostream>
#include <iterator>
#include <deque>
 
int main()
{
    std::deque<int> q;
    std::front_insert_iterator< std::deque<int> > it(q);
 
    for (int i=0; i<10; ++i)
        it = i; // 调用 q.push_front(i)
 
    for (auto& elem : q) std::cout << elem << ' ';
}

输出：

9 8 7 6 5 4 3 2 1 0