Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for an old version of Boost. Click here to view this page for the latest version.

Struct open_or_create_tag

boost::log::open_mode::open_or_create_tag — Creates a new resource or opens an existing one.


// In header: <boost/log/utility/open_mode.hpp>

struct open_or_create_tag {