【Iostreams】 How to check whether file has ben opened? ほんとだ・・・。(VC++8.0 + Boost 1.41.0/1.42.0) #include <iostream> #include <string> #include <boost/iostreams/stream.hpp> #include <boost/iostreams/device/file.hpp> int main() { const std::string filename("test"); boost::iostreams::stream</boost/iostreams/device/file.hpp></boost/iostreams/stream.hpp></string></iostream>

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