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std::back_inserter(3)	      C++ Standard Libary	 std::back_inserter(3)

NAME
       std::back_inserter - std::back_inserter

Synopsis
	  Defined in header <iterator>
	  template<		  class		      Container		     >
       (constexpr since
	  std::back_insert_iterator<Container>	back_inserter(	Container&   c
       C++20)
	  );

	  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.

Parameters
	  c - container	that supports a	push_back operation

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

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

Example
       // Run this code

	#include <algorithm>
	#include <iostream>
	#include <iterator>
	#include <vector>

	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 << ' ';
	    std::cout << '\n';
	}

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

See also
	  back_insert_iterator iterator	adaptor	for insertion at the end of  a
       container
			       (class template)
			       creates	a  std::front_insert_iterator  of type
       inferred	from the
	  front_inserter       argument
			       (function template)
			       creates a std::insert_iterator of type inferred
       from the
	  inserter	       argument
			       (function template)

http://cppreference.com		  2024.06.10		 std::back_inserter(3)

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