std::get_unexpected
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   Defined in header  
<exception>
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|   std::unexpected_handler get_unexpected(); 
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(since C++11)(deprecated) | |
Returns the currently installed std::unexpected_handler, which may be a null pointer.
Contents | 
[edit] Parameters
(none)
[edit] Return value
The currently installed std::unexpected_handler.
[edit] Exceptions
[edit] See also
|    (deprecated) 
 | 
    the type of the function called by std::unexpected   (typedef)  | 
|    (deprecated) 
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   changes the function to be called by std::unexpected  (function)  |