Function to_string

SRC/recorder/MPCORecorder.cpp:580–584

		template<class T>
		inline std::string to_string(T x) {
			std::stringstream ss;
			ss << x;
			return ss.str();
		}

		inline void split(const std::string &text, char sep, std::vector<std::string> &tokens, bool skip_empty = false)
		{