Boost C++ Libraries

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

This is an older version of Boost and was released in 2024. The current version is 1.90.0.

Global open_only

boost::log::open_mode::open_only

Synopsis

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

struct boost::log::open_mode::open_only_tag open_only;