std::back_inserter

 

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迭代器原语 Original: Iterator primitives The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
iterator_traits
input_iterator_tag output_iterator_tag forward_iterator_tag bidirectional_iterator_tag random_access_iterator_tag
iterator
迭代器适配器 Original: Iterator adaptors The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
reverse_iterator
move_iterator （C++11） back_insert_iterator front_insert_iterator insert_iterator	make_move_iterator （C++11） back_inserter front_inserter inserter
流迭代器 Original: Stream iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
istream_iterator
ostream_iterator
istreambuf_iterator
ostreambuf_iterator
迭代器操作 Original: Iterator operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
advance
distance
prev （C++11）
next （C++11）
远程接入 Original: Range access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
begin （C++11）
end （C++11）

 

Defined in header <iterator>
template< class Container > std::back_insert_iterator<Container> back_inserter( Container& c);

back_inserter是一个方便的函数模板，构建了一个std::back_insert_iterator推导出的参数类型同类型的容器c.

Original:

back_inserter is a convenience function template that constructs a std::back_insert_iterator for the container c with the type deduced from the type of the argument.

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参数

c

-

支持的push_back操作的容器 Original: container that supports a push_back operation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

返回值

一个std::back_insert_iterator可以用来将元素添加到容器c年底

Original:

A std::back_insert_iterator which can be used to add elements to the end of the container c

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可能的实现

template< class Container > std::back_insert_iterator<Container> back_inserter( Container& c) { return std::back_insert_iterator<Container>(c); }

为例

#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
int main()
{
    std::vector<int> v{1,2,3,4,5,6,7,8,9,10};
    std::fill_n(std::back_inserter(v), 3, -1);
    for(int n : v)
        std::cout << n << ' ';
}

Output:

1 2 3 4 5 6 7 8 9 10 -1 -1 -1

另请参阅

back_insert_iterator	在一个容器的端部，用于插入的迭代器适配器 Original: iterator adaptor for insertion at the end of a container The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （类模板）
front_inserter	创建一个std::front_insert_iterator从参数的类型推断 Original: creates a std::front_insert_iterator of type inferred from the argument The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数模板）
inserter	创建一个std::insert_iterator从参数的类型推断 Original: creates a std::insert_iterator of type inferred from the argument The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数模板）