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boost::log::expressions::channel_severity_filter_actor::subscript_result — An auxiliary pseudo-reference to implement insertion through subscript operator.
// In header: <boost/log/expressions/predicates/channel_severity_filter.hpp> // An auxiliary pseudo-reference to implement insertion through subscript // operator. class subscript_result { public: // public member functions subscript_result(channel_severity_filter_actor &, channel_value_type const &); void operator=(severity_value_type const &); };