need help! Template function specialisation in a class..

[ausairman]

I have this class, that has a function str_to_Tthat converts a char string to either a uint or a double. I don't know if I'm doing this right though, here is my header file so far:

class restart {
    template <class T>
    T str_to_T();
};

template<typename T>
T str_to_T(const char * elem) {
    // unknown type, so just throw
    throw;
}

template<>
unsigned str_to_T<unsigned>(const char * elem) {
    return atoi(elem);
}

template<>
double str_to_T<double>(const char * elem) {
    return atof(elem);
}

Is this the correct way of doing this?

[Peter87]

To make it work you need to make a few changes

class restart {
public:
    template <class T>
    T str_to_T(const char * elem);
};

template<typename T>
T restart::str_to_T(const char * elem) {
    // unknown type, so just throw
    throw;
}

template<>
unsigned restart::str_to_T<unsigned>(const char * elem) {
    return atoi(elem);
}

template<>
double restart::str_to_T<double>(const char * elem) {
    return atof(elem);
}

[ausairman]

ah of course, that makes sense, thanks :)