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

NAME
     std::front_inserter - std::front_inserter

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

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

Parameters
	c - container that supports a push_front operation

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

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

Example
     // Run this code

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

      int main()
      {
	  std::vector<int> v{1, 2, 3, 4, 5};
	  std::deque<int> d;
	  std::copy(v.begin(), v.end(), std::front_inserter(d));
	  for (int n : d)
	      std::cout << n << ' ';
	  std::cout << '\n';
      }

Output:
      5 4 3 2 1

See also
	front_insert_iterator  iterator  adaptor for insertion at the front of a
     container
			      (class template)
			      creates a std::back_insert_iterator  of  type  in-
     ferred from the
	back_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::front_inserter(3)
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