A C++ StringBuilder Class

#ifndef _STRING_ELEMENT_H
#define _STRING_ELEMENT_H

#include <string>
#include <sstream>

class StringElement {

private:
	template<typename T> std::string ToString(T &val) {

		std::stringstream ss;
		ss << val;
		std::string retVal;
		ss >> retVal;

		return retVal;
	};

	std::string _value;

public:
	StringElement(int i) : _value(ToString<int>(i)) {
	};
	
	StringElement(double d) : _value(ToString<double>(d)) {
	};
	
	StringElement(char c) : _value(ToString<char>(c)) {
	};
	
	StringElement(char *cp) : _value(cp) {
	};

	StringElement(const std::string s) : _value(s) {
	};
	
	StringElement(long l) : _value(ToString<long>(l)) {
	};
	
	StringElement(float f) : _value(ToString<float>(f)) {
	};
	
	StringElement(short s) : _value(ToString<short>(s)) {
	};
	
	StringElement(bool b) : _value(ToString<bool>(b)) {
	};

	operator std::string() const {

		return _value;
	};
};

#endif _STRING_ELEMENT_H