std::basic_istringstream::rdbuf
From cppreference.com
                    
                                        
                    < cpp | io | basic istringstream
                    
                                                            
                    
|   std::basic_stringbuf<CharT, Traits, Allocator>* rdbuf() const;  | 
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Returns pointer to the underlying raw string device object.
Parameters
(none)
Return value
Pointer to the underlying raw string device.
Example
| This section is incomplete Reason: no example  |