std::next

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C++
 
迭代器库
迭代器原语
Original:
Iterator primitives
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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
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reverse_iterator
流迭代器
Original:
Stream iterators
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istream_iterator
ostream_iterator
istreambuf_iterator
ostreambuf_iterator
迭代器操作
Original:
Iterator operations
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advance
distance
prev（C++11）
next（C++11）
远程接入
Original:
Range access
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begin（C++11）
end（C++11）
 
Defined in header <iterator>
template< class ForwardIt >

ForwardIt next( ForwardIt it,

                typename std::iterator_traits<ForwardIt>::difference_type n = 1 );
 （C++11 起）
返回的nth的继任者的迭代器it.
Original:
Return the nth successor of iterator it.
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目录

[编辑] 参数

it -
iterater“
Original:
an iterater'
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n -
前进的元素的数量
Original:
number of elements to advance
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Type requirements
-
ForwardIt must meet the requirements of ForwardIterator.

[编辑] 返回值

nth继任者的迭代器it.
Original:
The nth successor of iterator it.
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[编辑] 可能的实现

template<class ForwardIt>
ForwardIt next(ForwardIt it, typename std::iterator_traits<ForwardIt>::difference_type n = 1)
{
    std::advance(it, n);
    return it;
}

[编辑] 为例

#include <iostream>
#include <iterator>
#include <vector>
 
int main() 
{
    std::vector<int> v{ 3, 1, 4 };
 
    auto it = v.begin();
 
    auto nx = std::next(it, 2);
 
    std::cout << *it << ' ' << *nx << '\n';
}

Output: 

3 4

[编辑] 另请参阅

（C++11）
减一个迭代器
Original:
decrement an iterator
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（函数） [edit]
给定距离的迭代器
Original:
advances an iterator by given distance
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（函数） [edit]
来自“http://zh.cppreference.com/mwiki/index.php?title=cpp/iterator/next&oldid=26847”