Re: Problem with function template specialization

[Patrick Percot <ppercot at free dot fr>]

On Thu, 30 Dec 2004 11:47:19 -0500, Christian Convey <conveycj@npt.nuwc.navy.mil> wrote

> Hello,

Hi,

> 
> I'm trying to write a small library of function templates, all named 
> "toString", that will produce a string rendition of various data types.
> 
> My problem is that when I try to create a specialized version of the 
> toString() function for a particular data type, I get an error:
> 

Don't you think  that operator overloading is a  better and more elegant
solution ?

#include <iostream>
#include <sstream>
#include <vector>
#include <string>

using namespace std;

class Foo {
private:
  int x;
  int y;
public:
  Foo(int xv, int yv)
    : x(xv)
    , y(yv) {};
  friend ostream& operator<< (ostream& os, const Foo& f);
};


ostream& operator<< (ostream& os, const Foo& f) {
  os << "(" << &f << ") = Foo(" << f.x << ", " << f.y << ")";
}

template <typename T>
string toString(const T& val) {
  ostringstream os;
  os << val;
  return os.str();
}

int main() {
  Foo f(1,2);
  cout << toString(f) << endl;
}



[..Zappé 59 lignes et 1233 caractères..]

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PP
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Patrick Percot.