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

NAME
     std::list::empty - std::list::empty

Synopsis
	bool empty() const;			    (until C++11)
	bool empty() const noexcept;		    (since C++11)
						    (until C++20)
	[[nodiscard]] bool empty() const noexcept;  (since C++20)

	Checks if the container has no elements, i.e. whether begin() == end().

Parameters
	(none)

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

Complexity
	Constant.

Example
	The  following code uses empty to check if a std::list<int> contains any
     elements:

     // Run this code

      #include <list>
      #include <iostream>

      int main()
      {
	  std::list<int> numbers;
	  std::cout << std::boolalpha;
	  std::cout << "Initially,  numbers.empty():  "  <<  numbers.empty()  <<
     '\n';

	  numbers.push_back(42);
	  numbers.push_back(13317);
	  std::cout  <<  "After  adding  elements,  numbers.empty():  "  << num-
     bers.empty() << '\n';
      }

Output:
      Initially, numbers.empty(): true
      After adding elements, numbers.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::list::empty(3)
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