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Class template attribute_matches

boost::log::expressions::attribute_matches

Synopsis

// In header: <boost/log/expressions/predicates/matches.hpp>

template<typename T, typename RegexT, 
         typename FallbackPolicyT = fallback_to_none> 
class attribute_matches {
public:
  // construct/copy/destruct
  attribute_matches(attribute_name const &, RegexT const &);
  template<typename U> 
    attribute_matches(attribute_name const &, RegexT const &, U const &);
};

Description

The predicate checks if the attribute value matches a regular expression. The attribute value is assumed to be of a string type.

`attribute_matches` public construct/copy/destruct

```
attribute_matches(attribute_name const & name, RegexT const & rex);
```
Initializing constructor

Parameters:

name

Attribute name

rex

The regular expression to match the attribute value against

template<typename U> 
  attribute_matches(attribute_name const & name, RegexT const & rex, 
                    U const & arg);

Initializing constructor

Parameters:

`arg`	Additional parameter for the fallback policy
`name`	Attribute name
`rex`	The regular expression to match the attribute value against