Thanks for your answer. Still, I have a strange behavior : When the file doesn't exist, file.is_open() still return true !!! When I use 'ifstream file' instead of 'boost::iostreams::streamboost::iostreams::file_source file', the test 'if (file)' is always wrong when the file doesn't exist. Steven Watanabe-4 wrote:

AMDG

vandamme wrote:

...

I want to use boost to read a text file like this :

boost::iostreams::file_source file(filename.c_str());

But, when I want to get each single line with getline(), it doesn't compile :

while (std::getline(file, line)) { ...} // COMPILATION ERROR

What's the equivalent in boost for std::getline() ?

You can use boost::iostreams::stream.

#include #include #include <istream>

int main() { std::string filename("test"); boost::iostreams::streamboost::iostreams::file_source file(filename.c_str()); std::string line; while (std::getline(file, line)) { } }

In Christ, Steven Watanabe

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