std::basic_filebuf::uflow
protected: virtual int_type uflow() | ? | ? |
|---|
行为类似于underflow()，但如果underflow()%28不返回Traits::eof()%29，然后为GET区域前进下一个指针。换句话说，使用由underflow()...
参数
%280%29
返回值
在成功的情况下被读取和消耗的字符的价值，或Traits::eof()万一失败。
例
另见
uflow virtual | reads characters from the associated input sequence to the get area and advances the next pointer (virtual protected member function of std::basic_streambuf) |
|---|---|
underflow virtual | reads from the associated file (virtual protected member function) |
overflow virtual | writes characters to the associated file from the put area (virtual protected member function) |
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