36 static void rtrim(std::string &str);
37 static void ltrim(std::string &str);
38 static void trim(std::string &str);
40 static std::vector<std::string>
tokenize(
const std::string &token,
const std::string &data,
const std::string::size_type max = std::string::npos);
41 static double distance(
double lat1,
double lon1,
double lat2,
double lon2);
50 static double toRad(
double value);
51 static const double pi;