Boost C++ Libraries

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This is an older version of Boost and was released in 2023. The current version is 1.89.0.

Function template attr

Function template attr

boost::log::expressions::attr

Synopsis

// In header: <boost/log/expressions/attr.hpp>


template<typename AttributeValueT, typename TagT> 
  attribute_actor< AttributeValueT, fallback_to_none, TagT > 
  attr(attribute_name const & name);

Description

The function generates a terminal node in a template expression. The node will extract the value of the attribute with the specified name and type.