...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
error_code
// In header: <boost/dll/config.hpp> typedef std::conditional_t< BOOST_DLL_USE_STD_FS, std::error_code, boost::system::error_code > error_code;
Alias to std::error_code
if BOOST_DLL_USE_STD_FS is defined by user. boost::system::error_code otherwise.