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std::basic_filebuf::sync

性病：基本[医]filebuf：同步

protected: virtual int sync()​​

如果一个PUT区域存在%28例如。该文件是为写入%29调用而打开的overflow()若要将所有挂起的输出写入该文件，请将该文件刷新，就像通过调用std::fflush...

如果GET区域存在%28例如。该文件是为读取%29打开的，其效果是实现定义的。典型的实现可以清空GET区域，并以相应的字节数将当前文件位置移回。

参数

%280%29

返回值

​0​如果成功的话，-1万一失败。

注记

sync()或者它的等价被隐式调用。close()，，，seekoff()，和seekpos()并显式地被std::basic_streambuf::pubsync()...

例

另见

pubsyncinvokes sync() (public member function of std::basic_streambuf)
fflushsynchronizes an output stream with the actual file (function)

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