std::multiset::key_comp
From cppreference.com
                    
                                        
                    
                    
                                                            
                    
|   key_compare key_comp() const; 
 | 
||
Returns the function object that compares the keys, which is a copy of this container's constructor argument comp. It is the same as value_comp.
Contents | 
[edit] Parameters
(none)
[edit] Return value
The key comparison function object.
[edit] Complexity
Constant.
[edit] See also
|    returns the function that compares keys in objects of type value_type  (public member function)  |