...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::log::contains_fun — The contains
functor.
// In header: <boost/log/utility/functional/contains.hpp> struct contains_fun { // types typedef bool result_type; // public member functions template<typename T, typename U> bool operator()(T const &, U const &) const; };