Struct template has_fold

Struct template has_fold_case

boost::xpressive::has_fold_case — Trait used to denote that a traits class has the fold_case member function.

Synopsis

// In header: <boost/xpressive/xpressive_fwd.hpp>

template<typename Trait> 
struct has_fold_case : public is_convertible< Traits::version_tag *, regex_traits_version_1_case_fold_tag * >
{
};