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std::next

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< cpp‎ | iterator
Revision as of 16:39, 1 July 2013 by P12bot (Talk | contribs)

Defined in header <iterator>
template< class ForwardIt >

ForwardIt next( ForwardIt it,

                typename std::iterator_traits<ForwardIt>::difference_type n = 1 );
(since C++11)

Return the nth successor of iterator it.

Contents

Parameters

it - an iterator
n - number of elements to advance
Type requirements
-
ForwardIt must meet the requirements of ForwardIterator.

Return value

The nth successor of iterator it.

Possible implementation

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

Example

#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

See also

(C++11)
decrement an iterator
(function) [edit]
advances an iterator by given distance
(function) [edit]