std::string & TrimR(std::string & val);
std::string & Trim(std::string & val);
+std::string ToLower(const std::string & value);
+std::string ToUpper(const std::string & value);
+
std::string IconvString(const std::string & source, const std::string & from, const std::string & to);
int ParseInt(const std::string & str, int * val);
template <typename varT>
const std::string & x2str(varT x, std::string & s);
template <typename varT>
+const std::string & x2str(varT x) { std::string s; return x2str(x, s); }
+template <typename varT>
const std::string & unsigned2str(varT x, std::string & s);
+template <typename varT>
+const std::string & unsigned2str(varT x) { std::string s; return unsigned2str(x, s); }
//-----------------------------------------------------------------------------
template <typename varT>