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

NAME
     std::flat_multiset::empty - std::flat_multiset::empty

Synopsis
	[[nodiscard]] bool empty() const noexcept;  (since C++23)

	Checks if the underlying container has no elements. Equivalent to return
     begin() ==
	end();.

Parameters
	(none)

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

Complexity
	Constant.

Example
	The following code uses empty to check if a std::flat_multiset<int> con-
     tains any
	elements:

     // Run this code

      #include <iostream>
      #include <flat_set>

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

	  numbers.insert(42);
	  numbers.insert(19937);
	  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::flat_multiset::empty(3)
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