If you're interested in working with a C++ IOStream interface to extended attributes, you may want to check out libferris on SourceForge (see Resources).

如果您对使用扩展属性的 C++ IOStream 接口感兴趣，那么您可能要查看 SourceForge 上的 libferris（请参阅 参考资料）。

The inclusion of iostream and the definition of the EXPORT_API macro can be considered code-invariant parts of the file throughout the scope of the project.

其中包含了iostream和export_api宏的定义，在该项目的范围内，这些可以被看作是该文件中不变的代码部分。