char* str();
protected: virtual int_type underflow()
explicit basic_stringstream( ios_base::openmode mode = ios_base::in|ios_base::out
pos_type tellg();
void open( const char *filename, ios_base::openmode mode = ios_base::in
int pcount() const;
int_type get(); (1)
protected: void swap(basic_istream& rhs);
protected: void swap( basic_iostream& other );
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