#include <boost/log/detail/config.hpp>

Classes | |
| struct | boost::fallback_to_default< DefaultT > | 
The fallback_to_default policy results in a default value if the attribute value cannot be extracted.  More... | |
Namespaces | |
| boost | |
| Duration formatting facet for input.  | |
The header contains forward declaration of fallback policies when attribute value visitation or extraction fails.