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std::queue::empty(3)	       C++ Standard Libary	    std::queue::empty(3)

NAME
     std::queue::empty - std::queue::empty

Synopsis
	bool empty() const;		   (until C++20)
	[[nodiscard]] bool empty() const;  (since C++20)

	Checks if the underlying container has no elements. Equivalent to return
     c.empty();.

Parameters
	(none)

Return value
	true if the underlying container is empty, false otherwise.

Complexity
	Constant.

Example
     // Run this code

      #include <algorithm>
      #include <iostream>
      #include <queue>

      int main()
      {
	  std::cout << std::boolalpha;

	  std::queue<int> queue;

	  std::cout << "Initially, queue.empty(): " << queue.empty() << '\n';

	  queue.push(42);
	  std::cout << "After adding elements, queue.empty(): " << queue.empty()
     << '\n';
      }

Output:
      Initially, queue.empty(): true
      After adding elements, queue.empty(): false

See also
	size	returns the number of elements
		(public member function)
	empty	checks whether the container is empty
	(C++17) (function template)

http://cppreference.com 	   2024.06.10		    std::queue::empty(3)
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