C++: numerical to string convertion using Boost lexical_cast.

#include <string>
#include "boost/lexical_cast.hpp"

using namespace std;

// class ~ typename = same thing
template <class T>
string to_string(const T& arg) {
  try {
      return boost::lexical_cast<string>(arg);
  }
  catch(boost::bad_lexical_cast& e) {
      return "";
  }
}

Παράδειγμα χρήσης:

float float_nr=31212.434;
string float_str=to_string(float_nr);
// float_str = "31212.43"