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std::deque::pop_front(3)      C++ Standard Libary     std::deque::pop_front(3)

NAME
       std::deque::pop_front - std::deque::pop_front

Synopsis
	  void pop_front();

	  Removes the first element of the container. If there are no elements
       in the
	  container, the behavior is undefined.

	  Iterators  and  references to	the erased element are invalidated. If
       the element is
	  the last element in the container, the end() iterator	is also	inval-
       idated. Other
	  references and iterators are not affected.

Parameters
	  (none)

Return value
	  (none)

Complexity
	  Constant.

Exceptions
	  Does not throw.

Example
       // Run this code

	#include <deque>
	#include <iostream>

	int main()
	{
	    std::deque<char> chars{'A',	'B', 'C', 'D'};

	    for	(; !chars.empty(); chars.pop_front())
		std::cout << "chars.front(): '"	<< chars.front() << "'\n";
	}

Output:
	chars.front(): 'A'
	chars.front(): 'B'
	chars.front(): 'C'
	chars.front(): 'D'

See also
	  pop_back   removes the last element
		     (public member function)
	  push_front inserts an	element	to the beginning
		     (public member function)
	  front	     access the	first element
		     (public member function)

http://cppreference.com		  2024.06.10	      std::deque::pop_front(3)

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