Struct template has_requirement
boost::log::sinks::has_requirement
Synopsis
template<typename TestedT, typename RequiredT>
struct has_requirement : public is_base_of< RequiredT, TestedT > {
};
Description
A helper metafunction to check if a requirement is satisfied. The TestedT template argument should be the type combining one or several requirements and RequiredT is the requirement to test against. The metafunction will yield a positive result if TestedT supports RequiredT.