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Alex Rivera
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I'm using boost::program_options library to process command line params. I need to accept a file name via -r option, in case if it is empty (-r given without params) I need to use stdin. desc.add_options() ("replay,r", boost::program_options::value<std::string>(), "bla bla bla") In this case boost wouldn't accept -r without params and throw an exception. default_value () option does not work as well as it would make library return value even if user didn't give -r option. Any ideas how to work around?
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