std::queue::pop
From cppreference.com
                    
                                        
                    
                    
                                                            
                    
|   void pop(); 
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Removes an element from the front of the queue. Effectively calls c.pop_front()
Contents | 
[edit] Parameters
(none)
[edit] Return value
(none)
[edit] Complexity
Equal to the complexity of Container::pop_front.
[edit] See also
|    (C++11) 
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   constructs element in-place at the end   (public member function)  | 
|    inserts element at the end  (public member function)  |