std::inserter

 

C++

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input_iterator_tag output_iterator_tag forward_iterator_tag bidirectional_iterator_tag random_access_iterator_tag
iterator
Iterator adaptors
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move_iterator (C++11) back_insert_iterator front_insert_iterator insert_iterator	make_move_iterator (C++11) back_inserter front_inserter inserter
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Defined in header <iterator>
template< class Container > std::insert_iterator<Container> inserter( Container& c, typename Container::iterator i );

inserter is a convenience function template that constructs a std::insert_iterator for the container c and its iterator i with the type deduced from the type of the argument.

Parameters

c	-	container that supports a insert operation
i	-	iterator in c indicating the insertion position

Return value

A std::insert_iterator which can be used to insert elements into the container c at the position indicated by i.

Possible implementation

template< class Container > std::insert_iterator<Container> inserter( Container& c, typename Container::iterator i ) { return std::insert_iterator<Container>(c, i); }

Example

run this code

#include <iostream>
#include <list>
#include <algorithm>
#include <iterator>
 
int main()
{
    std::list<int> l{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
    std::fill_n(std::inserter(l, std::next(l.begin())), 3, -1);
 
    for (int n : l)
    {
        std::cout << n << ' ';
    }
}

Output:

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

See also

insert_iterator	iterator adaptor for insertion into a container (class template)
back_inserter	creates a std::back_insert_iterator of type inferred from the argument (function template)
front_inserter	creates a std::front_insert_iterator of type inferred from the argument (function template)