Boost C++ Libraries

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Class cast_source

boost::log::attributes::cast_source

Synopsis

// In header: <boost/log/attributes/attribute_cast.hpp>


class cast_source {
public:
  // construct/copy/destruct
  explicit cast_source(attribute::impl *);

  // public member functions
  template<typename T> T * as() const;
};

Description

The class holds a reference to the attribute factory implementation being casted

`cast_source` public construct/copy/destruct

```
explicit cast_source(attribute::impl * p);
```
Initializing constructor. Creates a source that refers to the specified factory implementation.

`cast_source` public member functions

```
template<typename T> T * as() const;
```
The function attempts to cast the aggregated pointer to the implementation to the specified type.

Returns:

The converted pointer or NULL, if the conversion fails.