as in...
??Code:// Validate.h namespace valid { bool driverIDValidator(const std::string& id); } // Validate.cpp #include "Validate.h" bool valid::driverIDValidator(const std::string& id); { static const boost::regex e("^[0-9]{6}[0-9]{4}[0-9]{3}$"); return regex_match(id, e); }