Thread: How to compare types ?

Hi!
I have sucha situation:

Code:

class a
{
        vector<int> v1;
        vector<some_type> v2;
        vector<some_type2> v3;
public: 
        template <class T> void f(T a)
        {
                // here I would like to check T if it is int,
                // and if it is then do v1.push_back(a);
                // and do the same if T is some_type or some_type2
        }
};

Is is possible to do something like this ?
Best regards.

You can pull that off using the typeid() operator, but this might be more efficient:

Code:

template <class T> void f(T a)
{
    //Do the some_type and some_type2 stuff here.
}

template <> void f<int>(int a)
{
    //Do the int stuff.
}

This is called a template specialization, and works well for these circumstances.

typeid might be what you're looking for.

Code:

int main( void )
{
    int i;
    char c;
    
    if ( typeid(i) == typeid(c) )
        std::cout<< "Tyeps the same";
    else 
        std::cout<< "Not the same!";

    std::cout<< typeid(i).name();
    std::cout<< typeid(c).name();


    return 0;
}

Ah, I'm beat.

Thanks for replies. In this time I will use template specialization.
Best regards.