boost::algorithm::is_classified — is_classified predicate
// In header: <boost/algorithm/string/classification.hpp> unspecified is_classified(std::ctype_base::mask Type, const std::locale & Loc = std::locale());
Construct the is_classified predicate. This predicate holds if the input is of specified std::ctype category.
is_classified
std::ctype
Parameters:
Loc
A locale used for classification
Type
A std::ctype category
Returns:
An instance of the is_classified predicate