std::list::empty
From cppreference.com
                    
                                        
                    
                    
                                                            
                    
| bool empty() const; | ||
Checks if the container has no elements, i.e. whether begin() == end().
| Contents | 
[edit] Parameters
(none)
[edit] Return value
true if the container is empty, false otherwise
[edit] Exceptions
| (none) | (until C++11) | 
| noexcept specification:   noexcept | (since C++11) | 
[edit] Complexity
Constant.
[edit] Example
 The following code uses empty to check if a std::list<int> contains any elements:
 
Run this code
Output:
Initially, numbers.empty(): 1 After adding elements, numbers.empty(): 0
See also
| returns the number of elements (public member function) | 


