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Function template operator<<

boost::log::operator<< — Stream output operator.


// In header: <boost/log/utility/value_ref.hpp>

template<typename CharT, typename TraitsT, typename T, typename TagT> 
  std::basic_ostream< CharT, TraitsT > & 
  operator<<(std::basic_ostream< CharT, TraitsT > & strm, 
             value_ref< T, TagT > const & val);